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Finding the Fourth Proportional to 85,099.20, 127,649.12 and 29,695.20

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Solution

The fourth proportional to 85,099.20, 127,649.12 and 29,695.20 is: 44,542.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,099.20 : 127,649.12 = 29,695.20 : x
  2. Step 2: Convert to fraction form
    85,099.20/127,649.12 = 29,695.20/x
  3. Step 3: Cross multiply
    85,099.20x = 127,649.12 × 29,695.20
  4. Step 4: Simplify right side
    85,099.20x = 3,790,566,148.22
  5. Step 5: Solve for x
    x = 3,790,566,148.22/85,099.20
  6. Step 6: Final answer
    x = 44,542.91

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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.