Home / 80,731.56-121,037.01-55,700.19

Finding the Fourth Proportional to 80,731.56, 121,037.01 and 55,700.19

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Solution

The fourth proportional to 80,731.56, 121,037.01 and 55,700.19 is: 83,508.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,731.56 : 121,037.01 = 55,700.19 : x
  2. Step 2: Convert to fraction form
    80,731.56/121,037.01 = 55,700.19/x
  3. Step 3: Cross multiply
    80,731.56x = 121,037.01 × 55,700.19
  4. Step 4: Simplify right side
    80,731.56x = 6,741,784,454.03
  5. Step 5: Solve for x
    x = 6,741,784,454.03/80,731.56
  6. Step 6: Final answer
    x = 83,508.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.