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Finding the Fourth Proportional to 70,988.67, 106,452.90 and 38,959.65

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Solution

The fourth proportional to 70,988.67, 106,452.90 and 38,959.65 is: 58,422.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,988.67 : 106,452.90 = 38,959.65 : x
  2. Step 2: Convert to fraction form
    70,988.67/106,452.90 = 38,959.65/x
  3. Step 3: Cross multiply
    70,988.67x = 106,452.90 × 38,959.65
  4. Step 4: Simplify right side
    70,988.67x = 4,147,367,725.49
  5. Step 5: Solve for x
    x = 4,147,367,725.49/70,988.67
  6. Step 6: Final answer
    x = 58,422.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.