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Finding the Fourth Proportional to 99,627.78, 149,473.98 and 59,640.54

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Solution

The fourth proportional to 99,627.78, 149,473.98 and 59,640.54 is: 89,480.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,627.78 : 149,473.98 = 59,640.54 : x
  2. Step 2: Convert to fraction form
    99,627.78/149,473.98 = 59,640.54/x
  3. Step 3: Cross multiply
    99,627.78x = 149,473.98 × 59,640.54
  4. Step 4: Simplify right side
    99,627.78x = 8,914,708,322.62
  5. Step 5: Solve for x
    x = 8,914,708,322.62/99,627.78
  6. Step 6: Final answer
    x = 89,480.15

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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.