Home / 80,765.30-121,277.55-54,586.10

Finding the Fourth Proportional to 80,765.30, 121,277.55 and 54,586.10

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Solution

The fourth proportional to 80,765.30, 121,277.55 and 54,586.10 is: 81,966.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,765.30 : 121,277.55 = 54,586.10 : x
  2. Step 2: Convert to fraction form
    80,765.30/121,277.55 = 54,586.10/x
  3. Step 3: Cross multiply
    80,765.30x = 121,277.55 × 54,586.10
  4. Step 4: Simplify right side
    80,765.30x = 6,620,068,472.06
  5. Step 5: Solve for x
    x = 6,620,068,472.06/80,765.30
  6. Step 6: Final answer
    x = 81,966.74

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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.