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Finding the Fourth Proportional to 70,042.76, 96,658.80 and 38,211.43

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Solution

The fourth proportional to 70,042.76, 96,658.80 and 38,211.43 is: 52,731.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,042.76 : 96,658.80 = 38,211.43 : x
  2. Step 2: Convert to fraction form
    70,042.76/96,658.80 = 38,211.43/x
  3. Step 3: Cross multiply
    70,042.76x = 96,658.80 × 38,211.43
  4. Step 4: Simplify right side
    70,042.76x = 3,693,471,308.50
  5. Step 5: Solve for x
    x = 3,693,471,308.50/70,042.76
  6. Step 6: Final answer
    x = 52,731.66

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.