Home / 89,407.17-123,382.74-49,121.78

Finding the Fourth Proportional to 89,407.17, 123,382.74 and 49,121.78

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Solution

The fourth proportional to 89,407.17, 123,382.74 and 49,121.78 is: 67,788.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,407.17 : 123,382.74 = 49,121.78 : x
  2. Step 2: Convert to fraction form
    89,407.17/123,382.74 = 49,121.78/x
  3. Step 3: Cross multiply
    89,407.17x = 123,382.74 × 49,121.78
  4. Step 4: Simplify right side
    89,407.17x = 6,060,779,193.16
  5. Step 5: Solve for x
    x = 6,060,779,193.16/89,407.17
  6. Step 6: Final answer
    x = 67,788.51

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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.