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Finding the Fourth Proportional to 63,990.86, 88,291.19 and 38,489.03

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Solution

The fourth proportional to 63,990.86, 88,291.19 and 38,489.03 is: 53,105.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,990.86 : 88,291.19 = 38,489.03 : x
  2. Step 2: Convert to fraction form
    63,990.86/88,291.19 = 38,489.03/x
  3. Step 3: Cross multiply
    63,990.86x = 88,291.19 × 38,489.03
  4. Step 4: Simplify right side
    63,990.86x = 3,398,241,626.74
  5. Step 5: Solve for x
    x = 3,398,241,626.74/63,990.86
  6. Step 6: Final answer
    x = 53,105.11

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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.