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Finding the Fourth Proportional to 99,694.29, 149,569.69 and 40,572.39

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Solution

The fourth proportional to 99,694.29, 149,569.69 and 40,572.39 is: 60,870.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,694.29 : 149,569.69 = 40,572.39 : x
  2. Step 2: Convert to fraction form
    99,694.29/149,569.69 = 40,572.39/x
  3. Step 3: Cross multiply
    99,694.29x = 149,569.69 × 40,572.39
  4. Step 4: Simplify right side
    99,694.29x = 6,068,400,330.39
  5. Step 5: Solve for x
    x = 6,068,400,330.39/99,694.29
  6. Step 6: Final answer
    x = 60,870.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.