Home / 80,981.60-121,506-36,577.76

Finding the Fourth Proportional to 80,981.60, 121,506 and 36,577.76

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Solution

The fourth proportional to 80,981.60, 121,506 and 36,577.76 is: 54,881.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,981.60 : 121,506 = 36,577.76 : x
  2. Step 2: Convert to fraction form
    80,981.60/121,506 = 36,577.76/x
  3. Step 3: Cross multiply
    80,981.60x = 121,506 × 36,577.76
  4. Step 4: Simplify right side
    80,981.60x = 4,444,417,306.56
  5. Step 5: Solve for x
    x = 4,444,417,306.56/80,981.60
  6. Step 6: Final answer
    x = 54,881.82

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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.