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Finding the Fourth Proportional to 71,801.79, 99,082.59 and 39,530.13

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Solution

The fourth proportional to 71,801.79, 99,082.59 and 39,530.13 is: 54,549.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,801.79 : 99,082.59 = 39,530.13 : x
  2. Step 2: Convert to fraction form
    71,801.79/99,082.59 = 39,530.13/x
  3. Step 3: Cross multiply
    71,801.79x = 99,082.59 × 39,530.13
  4. Step 4: Simplify right side
    71,801.79x = 3,916,747,366.00
  5. Step 5: Solve for x
    x = 3,916,747,366.00/71,801.79
  6. Step 6: Final answer
    x = 54,549.44

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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.