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Finding the Fourth Proportional to 71,188.32, 98,237.54 and 39,352.88

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Solution

The fourth proportional to 71,188.32, 98,237.54 and 39,352.88 is: 54,305.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,188.32 : 98,237.54 = 39,352.88 : x
  2. Step 2: Convert to fraction form
    71,188.32/98,237.54 = 39,352.88/x
  3. Step 3: Cross multiply
    71,188.32x = 98,237.54 × 39,352.88
  4. Step 4: Simplify right side
    71,188.32x = 3,865,930,123.12
  5. Step 5: Solve for x
    x = 3,865,930,123.12/71,188.32
  6. Step 6: Final answer
    x = 54,305.68

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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.