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Finding the Fourth Proportional to 99,545.84, 137,363.30 and 61,299.28

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Solution

The fourth proportional to 99,545.84, 137,363.30 and 61,299.28 is: 84,586.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,545.84 : 137,363.30 = 61,299.28 : x
  2. Step 2: Convert to fraction form
    99,545.84/137,363.30 = 61,299.28/x
  3. Step 3: Cross multiply
    99,545.84x = 137,363.30 × 61,299.28
  4. Step 4: Simplify right side
    99,545.84x = 8,420,271,388.42
  5. Step 5: Solve for x
    x = 8,420,271,388.42/99,545.84
  6. Step 6: Final answer
    x = 84,586.87

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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.