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Finding the Fourth Proportional to 81,085.52, 111,884.66 and 45,269.74

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Solution

The fourth proportional to 81,085.52, 111,884.66 and 45,269.74 is: 62,464.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,085.52 : 111,884.66 = 45,269.74 : x
  2. Step 2: Convert to fraction form
    81,085.52/111,884.66 = 45,269.74/x
  3. Step 3: Cross multiply
    81,085.52x = 111,884.66 × 45,269.74
  4. Step 4: Simplify right side
    81,085.52x = 5,064,989,468.19
  5. Step 5: Solve for x
    x = 5,064,989,468.19/81,085.52
  6. Step 6: Final answer
    x = 62,464.78

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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.