Home / 72,354,658.20-108,531,987.30-18,501,970.20

Finding the Fourth Proportional to 72,354,658.20, 108,531,987.30 and 18,501,970.20

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Solution

The fourth proportional to 72,354,658.20, 108,531,987.30 and 18,501,970.20 is: 27,752,955.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,354,658.20 : 108,531,987.30 = 18,501,970.20 : x
  2. Step 2: Convert to fraction form
    72,354,658.20/108,531,987.30 = 18,501,970.20/x
  3. Step 3: Cross multiply
    72,354,658.20x = 108,531,987.30 × 18,501,970.20
  4. Step 4: Simplify right side
    72,354,658.20x = 2,008,055,594,771,378.25
  5. Step 5: Solve for x
    x = 2,008,055,594,771,378.25/72,354,658.20
  6. Step 6: Final answer
    x = 27,752,955.30

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Double scale
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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.