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Finding the Fourth Proportional to 71,626.92, 98,845.14 and 39,798.72

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Solution

The fourth proportional to 71,626.92, 98,845.14 and 39,798.72 is: 54,922.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,626.92 : 98,845.14 = 39,798.72 : x
  2. Step 2: Convert to fraction form
    71,626.92/98,845.14 = 39,798.72/x
  3. Step 3: Cross multiply
    71,626.92x = 98,845.14 × 39,798.72
  4. Step 4: Simplify right side
    71,626.92x = 3,933,910,050.22
  5. Step 5: Solve for x
    x = 3,933,910,050.22/71,626.92
  6. Step 6: Final answer
    x = 54,922.23

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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.