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Finding the Fourth Proportional to 85,314.88, 117,772.28 and 55,114.92

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Solution

The fourth proportional to 85,314.88, 117,772.28 and 55,114.92 is: 76,082.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,314.88 : 117,772.28 = 55,114.92 : x
  2. Step 2: Convert to fraction form
    85,314.88/117,772.28 = 55,114.92/x
  3. Step 3: Cross multiply
    85,314.88x = 117,772.28 × 55,114.92
  4. Step 4: Simplify right side
    85,314.88x = 6,491,009,790.42
  5. Step 5: Solve for x
    x = 6,491,009,790.42/85,314.88
  6. Step 6: Final answer
    x = 76,082.97

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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.