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Finding the Fourth Proportional to 71,135.40, 106,562.70 and 36,100.20

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Solution

The fourth proportional to 71,135.40, 106,562.70 and 36,100.20 is: 54,079.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,135.40 : 106,562.70 = 36,100.20 : x
  2. Step 2: Convert to fraction form
    71,135.40/106,562.70 = 36,100.20/x
  3. Step 3: Cross multiply
    71,135.40x = 106,562.70 × 36,100.20
  4. Step 4: Simplify right side
    71,135.40x = 3,846,934,782.54
  5. Step 5: Solve for x
    x = 3,846,934,782.54/71,135.40
  6. Step 6: Final answer
    x = 54,079.05

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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.