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Finding the Fourth Proportional to 60,419, 90,340.14 and 55,125.38

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Solution

The fourth proportional to 60,419, 90,340.14 and 55,125.38 is: 82,424.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,419 : 90,340.14 = 55,125.38 : x
  2. Step 2: Convert to fraction form
    60,419/90,340.14 = 55,125.38/x
  3. Step 3: Cross multiply
    60,419x = 90,340.14 × 55,125.38
  4. Step 4: Simplify right side
    60,419x = 4,980,034,546.75
  5. Step 5: Solve for x
    x = 4,980,034,546.75/60,419
  6. Step 6: Final answer
    x = 82,424.97

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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.