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Finding the Fourth Proportional to 89,863.68, 124,012.92 and 49,578.91

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Solution

The fourth proportional to 89,863.68, 124,012.92 and 49,578.91 is: 68,419.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,863.68 : 124,012.92 = 49,578.91 : x
  2. Step 2: Convert to fraction form
    89,863.68/124,012.92 = 49,578.91/x
  3. Step 3: Cross multiply
    89,863.68x = 124,012.92 × 49,578.91
  4. Step 4: Simplify right side
    89,863.68x = 6,148,425,624.19
  5. Step 5: Solve for x
    x = 6,148,425,624.19/89,863.68
  6. Step 6: Final answer
    x = 68,419.47

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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.