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Finding the Fourth Proportional to 99,081.78, 148,627.54 and 39,909.44

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Solution

The fourth proportional to 99,081.78, 148,627.54 and 39,909.44 is: 59,866.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,081.78 : 148,627.54 = 39,909.44 : x
  2. Step 2: Convert to fraction form
    99,081.78/148,627.54 = 39,909.44/x
  3. Step 3: Cross multiply
    99,081.78x = 148,627.54 × 39,909.44
  4. Step 4: Simplify right side
    99,081.78x = 5,931,641,889.98
  5. Step 5: Solve for x
    x = 5,931,641,889.98/99,081.78
  6. Step 6: Final answer
    x = 59,866.12

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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.