Home / 72,171,036.90-108,256,555.35-18,318,348.90

Finding the Fourth Proportional to 72,171,036.90, 108,256,555.35 and 18,318,348.90

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Solution

The fourth proportional to 72,171,036.90, 108,256,555.35 and 18,318,348.90 is: 27,477,523.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,171,036.90 : 108,256,555.35 = 18,318,348.90 : x
  2. Step 2: Convert to fraction form
    72,171,036.90/108,256,555.35 = 18,318,348.90/x
  3. Step 3: Cross multiply
    72,171,036.90x = 108,256,555.35 × 18,318,348.90
  4. Step 4: Simplify right side
    72,171,036.90x = 1,983,081,351,613,461.25
  5. Step 5: Solve for x
    x = 1,983,081,351,613,461.25/72,171,036.90
  6. Step 6: Final answer
    x = 27,477,523.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.