Home / 89,406.18-123,381.36-49,120.78

Finding the Fourth Proportional to 89,406.18, 123,381.36 and 49,120.78

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Solution

The fourth proportional to 89,406.18, 123,381.36 and 49,120.78 is: 67,787.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,406.18 : 123,381.36 = 49,120.78 : x
  2. Step 2: Convert to fraction form
    89,406.18/123,381.36 = 49,120.78/x
  3. Step 3: Cross multiply
    89,406.18x = 123,381.36 × 49,120.78
  4. Step 4: Simplify right side
    89,406.18x = 6,060,588,023.75
  5. Step 5: Solve for x
    x = 6,060,588,023.75/89,406.18
  6. Step 6: Final answer
    x = 67,787.13

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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.