Home / 89,643.13-123,707.51-49,899.13

Finding the Fourth Proportional to 89,643.13, 123,707.51 and 49,899.13

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Solution

The fourth proportional to 89,643.13, 123,707.51 and 49,899.13 is: 68,860.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,643.13 : 123,707.51 = 49,899.13 : x
  2. Step 2: Convert to fraction form
    89,643.13/123,707.51 = 49,899.13/x
  3. Step 3: Cross multiply
    89,643.13x = 123,707.51 × 49,899.13
  4. Step 4: Simplify right side
    89,643.13x = 6,172,897,123.47
  5. Step 5: Solve for x
    x = 6,172,897,123.47/89,643.13
  6. Step 6: Final answer
    x = 68,860.79

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1.5x scale

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.