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Finding the Fourth Proportional to 71,473.92, 98,633.36 and 39,642.88

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Solution

The fourth proportional to 71,473.92, 98,633.36 and 39,642.88 is: 54,706.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,473.92 : 98,633.36 = 39,642.88 : x
  2. Step 2: Convert to fraction form
    71,473.92/98,633.36 = 39,642.88/x
  3. Step 3: Cross multiply
    71,473.92x = 98,633.36 × 39,642.88
  4. Step 4: Simplify right side
    71,473.92x = 3,910,110,454.48
  5. Step 5: Solve for x
    x = 3,910,110,454.48/71,473.92
  6. Step 6: Final answer
    x = 54,706.81

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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.