Home / 80,569.72-120,730.38-43,134.76

Finding the Fourth Proportional to 80,569.72, 120,730.38 and 43,134.76

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Solution

The fourth proportional to 80,569.72, 120,730.38 and 43,134.76 is: 64,635.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,569.72 : 120,730.38 = 43,134.76 : x
  2. Step 2: Convert to fraction form
    80,569.72/120,730.38 = 43,134.76/x
  3. Step 3: Cross multiply
    80,569.72x = 120,730.38 × 43,134.76
  4. Step 4: Simplify right side
    80,569.72x = 5,207,675,966.01
  5. Step 5: Solve for x
    x = 5,207,675,966.01/80,569.72
  6. Step 6: Final answer
    x = 64,635.65

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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.