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Finding the Fourth Proportional to 71,520.76, 98,703.12 and 41,311.61

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Solution

The fourth proportional to 71,520.76, 98,703.12 and 41,311.61 is: 57,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,520.76 : 98,703.12 = 41,311.61 : x
  2. Step 2: Convert to fraction form
    71,520.76/98,703.12 = 41,311.61/x
  3. Step 3: Cross multiply
    71,520.76x = 98,703.12 × 41,311.61
  4. Step 4: Simplify right side
    71,520.76x = 4,077,584,799.22
  5. Step 5: Solve for x
    x = 4,077,584,799.22/71,520.76
  6. Step 6: Final answer
    x = 57,012.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.