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Finding the Fourth Proportional to 71,301.28, 98,391.54 and 39,468.28

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Solution

The fourth proportional to 71,301.28, 98,391.54 and 39,468.28 is: 54,463.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,301.28 : 98,391.54 = 39,468.28 : x
  2. Step 2: Convert to fraction form
    71,301.28/98,391.54 = 39,468.28/x
  3. Step 3: Cross multiply
    71,301.28x = 98,391.54 × 39,468.28
  4. Step 4: Simplify right side
    71,301.28x = 3,883,344,850.35
  5. Step 5: Solve for x
    x = 3,883,344,850.35/71,301.28
  6. Step 6: Final answer
    x = 54,463.89

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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.