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Finding the Fourth Proportional to 71,663.28, 107,507.84 and 29,520.36

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Solution

The fourth proportional to 71,663.28, 107,507.84 and 29,520.36 is: 44,285.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,663.28 : 107,507.84 = 29,520.36 : x
  2. Step 2: Convert to fraction form
    71,663.28/107,507.84 = 29,520.36/x
  3. Step 3: Cross multiply
    71,663.28x = 107,507.84 × 29,520.36
  4. Step 4: Simplify right side
    71,663.28x = 3,173,670,139.62
  5. Step 5: Solve for x
    x = 3,173,670,139.62/71,663.28
  6. Step 6: Final answer
    x = 44,285.86

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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.