Home / 80,512.28-120,584.47-38,421.91

Finding the Fourth Proportional to 80,512.28, 120,584.47 and 38,421.91

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Solution

The fourth proportional to 80,512.28, 120,584.47 and 38,421.91 is: 57,545.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,512.28 : 120,584.47 = 38,421.91 : x
  2. Step 2: Convert to fraction form
    80,512.28/120,584.47 = 38,421.91/x
  3. Step 3: Cross multiply
    80,512.28x = 120,584.47 × 38,421.91
  4. Step 4: Simplify right side
    80,512.28x = 4,633,085,653.74
  5. Step 5: Solve for x
    x = 4,633,085,653.74/80,512.28
  6. Step 6: Final answer
    x = 57,545.08

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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.