Home / 89,718.28-123,829.10-51,503.65

Finding the Fourth Proportional to 89,718.28, 123,829.10 and 51,503.65

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Solution

The fourth proportional to 89,718.28, 123,829.10 and 51,503.65 is: 71,085.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,718.28 : 123,829.10 = 51,503.65 : x
  2. Step 2: Convert to fraction form
    89,718.28/123,829.10 = 51,503.65/x
  3. Step 3: Cross multiply
    89,718.28x = 123,829.10 × 51,503.65
  4. Step 4: Simplify right side
    89,718.28x = 6,377,650,541.97
  5. Step 5: Solve for x
    x = 6,377,650,541.97/89,718.28
  6. Step 6: Final answer
    x = 71,085.29

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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.