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Finding the Fourth Proportional to 99,545.67, 137,371.11 and 54,223.13

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Solution

The fourth proportional to 99,545.67, 137,371.11 and 54,223.13 is: 74,826.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,545.67 : 137,371.11 = 54,223.13 : x
  2. Step 2: Convert to fraction form
    99,545.67/137,371.11 = 54,223.13/x
  3. Step 3: Cross multiply
    99,545.67x = 137,371.11 × 54,223.13
  4. Step 4: Simplify right side
    99,545.67x = 7,448,690,868.92
  5. Step 5: Solve for x
    x = 7,448,690,868.92/99,545.67
  6. Step 6: Final answer
    x = 74,826.87

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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.