Home / 80,484.88-120,752.04-38,418.64

Finding the Fourth Proportional to 80,484.88, 120,752.04 and 38,418.64

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Solution

The fourth proportional to 80,484.88, 120,752.04 and 38,418.64 is: 57,639.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,484.88 : 120,752.04 = 38,418.64 : x
  2. Step 2: Convert to fraction form
    80,484.88/120,752.04 = 38,418.64/x
  3. Step 3: Cross multiply
    80,484.88x = 120,752.04 × 38,418.64
  4. Step 4: Simplify right side
    80,484.88x = 4,639,129,154.03
  5. Step 5: Solve for x
    x = 4,639,129,154.03/80,484.88
  6. Step 6: Final answer
    x = 57,639.76

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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.