Home / 89,689.79-123,767.35-49,402.69

Finding the Fourth Proportional to 89,689.79, 123,767.35 and 49,402.69

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Solution

The fourth proportional to 89,689.79, 123,767.35 and 49,402.69 is: 68,173.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,689.79 : 123,767.35 = 49,402.69 : x
  2. Step 2: Convert to fraction form
    89,689.79/123,767.35 = 49,402.69/x
  3. Step 3: Cross multiply
    89,689.79x = 123,767.35 × 49,402.69
  4. Step 4: Simplify right side
    89,689.79x = 6,114,439,591.25
  5. Step 5: Solve for x
    x = 6,114,439,591.25/89,689.79
  6. Step 6: Final answer
    x = 68,173.19

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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.