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Finding the Fourth Proportional to 63,920.22, 88,201.35 and 38,764.86

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Solution

The fourth proportional to 63,920.22, 88,201.35 and 38,764.86 is: 53,490.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,920.22 : 88,201.35 = 38,764.86 : x
  2. Step 2: Convert to fraction form
    63,920.22/88,201.35 = 38,764.86/x
  3. Step 3: Cross multiply
    63,920.22x = 88,201.35 × 38,764.86
  4. Step 4: Simplify right side
    63,920.22x = 3,419,112,984.56
  5. Step 5: Solve for x
    x = 3,419,112,984.56/63,920.22
  6. Step 6: Final answer
    x = 53,490.32

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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.