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Finding the Fourth Proportional to 63,655.27, 87,807.71 and 39,740.42

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Solution

The fourth proportional to 63,655.27, 87,807.71 and 39,740.42 is: 54,818.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,655.27 : 87,807.71 = 39,740.42 : x
  2. Step 2: Convert to fraction form
    63,655.27/87,807.71 = 39,740.42/x
  3. Step 3: Cross multiply
    63,655.27x = 87,807.71 × 39,740.42
  4. Step 4: Simplify right side
    63,655.27x = 3,489,515,593.51
  5. Step 5: Solve for x
    x = 3,489,515,593.51/63,655.27
  6. Step 6: Final answer
    x = 54,818.96

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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.