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Finding the Fourth Proportional to 84,099.90, 126,149.84 and 39,731.14

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Solution

The fourth proportional to 84,099.90, 126,149.84 and 39,731.14 is: 59,596.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,099.90 : 126,149.84 = 39,731.14 : x
  2. Step 2: Convert to fraction form
    84,099.90/126,149.84 = 39,731.14/x
  3. Step 3: Cross multiply
    84,099.90x = 126,149.84 × 39,731.14
  4. Step 4: Simplify right side
    84,099.90x = 5,012,076,954.02
  5. Step 5: Solve for x
    x = 5,012,076,954.02/84,099.90
  6. Step 6: Final answer
    x = 59,596.71

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1.5x scale

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.