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Finding the Fourth Proportional to 67,879.56, 93,660.78 and 38,817.15

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Solution

The fourth proportional to 67,879.56, 93,660.78 and 38,817.15 is: 53,560.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,879.56 : 93,660.78 = 38,817.15 : x
  2. Step 2: Convert to fraction form
    67,879.56/93,660.78 = 38,817.15/x
  3. Step 3: Cross multiply
    67,879.56x = 93,660.78 × 38,817.15
  4. Step 4: Simplify right side
    67,879.56x = 3,635,644,340.71
  5. Step 5: Solve for x
    x = 3,635,644,340.71/67,879.56
  6. Step 6: Final answer
    x = 53,560.22

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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.