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Finding the Fourth Proportional to 83,720.32, 115,504.99 and 53,523.32

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Solution

The fourth proportional to 83,720.32, 115,504.99 and 53,523.32 is: 73,843.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,720.32 : 115,504.99 = 53,523.32 : x
  2. Step 2: Convert to fraction form
    83,720.32/115,504.99 = 53,523.32/x
  3. Step 3: Cross multiply
    83,720.32x = 115,504.99 × 53,523.32
  4. Step 4: Simplify right side
    83,720.32x = 6,182,209,830.03
  5. Step 5: Solve for x
    x = 6,182,209,830.03/83,720.32
  6. Step 6: Final answer
    x = 73,843.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.