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Finding the Fourth Proportional to 85,082.66, 126,750.88 and 81,244.48

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Solution

The fourth proportional to 85,082.66, 126,750.88 and 81,244.48 is: 121,033.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,082.66 : 126,750.88 = 81,244.48 : x
  2. Step 2: Convert to fraction form
    85,082.66/126,750.88 = 81,244.48/x
  3. Step 3: Cross multiply
    85,082.66x = 126,750.88 × 81,244.48
  4. Step 4: Simplify right side
    85,082.66x = 10,297,809,335.14
  5. Step 5: Solve for x
    x = 10,297,809,335.14/85,082.66
  6. Step 6: Final answer
    x = 121,033.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.