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Finding the Fourth Proportional to 81,169.67, 112,024.75 and 45,367.13

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Solution

The fourth proportional to 81,169.67, 112,024.75 and 45,367.13 is: 62,612.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,169.67 : 112,024.75 = 45,367.13 : x
  2. Step 2: Convert to fraction form
    81,169.67/112,024.75 = 45,367.13/x
  3. Step 3: Cross multiply
    81,169.67x = 112,024.75 × 45,367.13
  4. Step 4: Simplify right side
    81,169.67x = 5,082,241,396.47
  5. Step 5: Solve for x
    x = 5,082,241,396.47/81,169.67
  6. Step 6: Final answer
    x = 62,612.57

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1.5x scale

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.