Home / 80,378.76-120,569.04-38,262.72

Finding the Fourth Proportional to 80,378.76, 120,569.04 and 38,262.72

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Solution

The fourth proportional to 80,378.76, 120,569.04 and 38,262.72 is: 57,394.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,378.76 : 120,569.04 = 38,262.72 : x
  2. Step 2: Convert to fraction form
    80,378.76/120,569.04 = 38,262.72/x
  3. Step 3: Cross multiply
    80,378.76x = 120,569.04 × 38,262.72
  4. Step 4: Simplify right side
    80,378.76x = 4,613,299,418.19
  5. Step 5: Solve for x
    x = 4,613,299,418.19/80,378.76
  6. Step 6: Final answer
    x = 57,394.51

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1.5x scale

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.