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Finding the Fourth Proportional to 79,082.68, 109,129.94 and 45,092.20

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Solution

The fourth proportional to 79,082.68, 109,129.94 and 45,092.20 is: 62,224.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,082.68 : 109,129.94 = 45,092.20 : x
  2. Step 2: Convert to fraction form
    79,082.68/109,129.94 = 45,092.20/x
  3. Step 3: Cross multiply
    79,082.68x = 109,129.94 × 45,092.20
  4. Step 4: Simplify right side
    79,082.68x = 4,920,909,080.47
  5. Step 5: Solve for x
    x = 4,920,909,080.47/79,082.68
  6. Step 6: Final answer
    x = 62,224.86

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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.