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Finding the Fourth Proportional to 63,640.27, 87,751.11 and 40,639.11

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Solution

The fourth proportional to 63,640.27, 87,751.11 and 40,639.11 is: 56,035.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,640.27 : 87,751.11 = 40,639.11 : x
  2. Step 2: Convert to fraction form
    63,640.27/87,751.11 = 40,639.11/x
  3. Step 3: Cross multiply
    63,640.27x = 87,751.11 × 40,639.11
  4. Step 4: Simplify right side
    63,640.27x = 3,566,127,011.91
  5. Step 5: Solve for x
    x = 3,566,127,011.91/63,640.27
  6. Step 6: Final answer
    x = 56,035.70

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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.