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Finding the Fourth Proportional to 63,644.68, 87,757.19 and 40,643.52

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Solution

The fourth proportional to 63,644.68, 87,757.19 and 40,643.52 is: 56,041.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,644.68 : 87,757.19 = 40,643.52 : x
  2. Step 2: Convert to fraction form
    63,644.68/87,757.19 = 40,643.52/x
  3. Step 3: Cross multiply
    63,644.68x = 87,757.19 × 40,643.52
  4. Step 4: Simplify right side
    63,644.68x = 3,566,761,106.91
  5. Step 5: Solve for x
    x = 3,566,761,106.91/63,644.68
  6. Step 6: Final answer
    x = 56,041.78

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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.