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Finding the Fourth Proportional to 69,147.65, 95,432.85 and 38,938.88

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Solution

The fourth proportional to 69,147.65, 95,432.85 and 38,938.88 is: 53,740.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,147.65 : 95,432.85 = 38,938.88 : x
  2. Step 2: Convert to fraction form
    69,147.65/95,432.85 = 38,938.88/x
  3. Step 3: Cross multiply
    69,147.65x = 95,432.85 × 38,938.88
  4. Step 4: Simplify right side
    69,147.65x = 3,716,048,532.79
  5. Step 5: Solve for x
    x = 3,716,048,532.79/69,147.65
  6. Step 6: Final answer
    x = 53,740.78

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1.5x scale

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.