Home / 84,381.20-126,604.47-77,491.88

Finding the Fourth Proportional to 84,381.20, 126,604.47 and 77,491.88

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Solution

The fourth proportional to 84,381.20, 126,604.47 and 77,491.88 is: 116,267.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,381.20 : 126,604.47 = 77,491.88 : x
  2. Step 2: Convert to fraction form
    84,381.20/126,604.47 = 77,491.88/x
  3. Step 3: Cross multiply
    84,381.20x = 126,604.47 × 77,491.88
  4. Step 4: Simplify right side
    84,381.20x = 9,810,818,396.70
  5. Step 5: Solve for x
    x = 9,810,818,396.70/84,381.20
  6. Step 6: Final answer
    x = 116,267.82

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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.