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Finding the Fourth Proportional to 70,161.72, 96,818.61 and 38,330.61

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Solution

The fourth proportional to 70,161.72, 96,818.61 and 38,330.61 is: 52,893.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,161.72 : 96,818.61 = 38,330.61 : x
  2. Step 2: Convert to fraction form
    70,161.72/96,818.61 = 38,330.61/x
  3. Step 3: Cross multiply
    70,161.72x = 96,818.61 × 38,330.61
  4. Step 4: Simplify right side
    70,161.72x = 3,711,116,380.65
  5. Step 5: Solve for x
    x = 3,711,116,380.65/70,161.72
  6. Step 6: Final answer
    x = 52,893.75

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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.