Home / 80,873.32-121,345.26-28,320.52

Finding the Fourth Proportional to 80,873.32, 121,345.26 and 28,320.52

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Solution

The fourth proportional to 80,873.32, 121,345.26 and 28,320.52 is: 42,493.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,873.32 : 121,345.26 = 28,320.52 : x
  2. Step 2: Convert to fraction form
    80,873.32/121,345.26 = 28,320.52/x
  3. Step 3: Cross multiply
    80,873.32x = 121,345.26 × 28,320.52
  4. Step 4: Simplify right side
    80,873.32x = 3,436,560,862.74
  5. Step 5: Solve for x
    x = 3,436,560,862.74/80,873.32
  6. Step 6: Final answer
    x = 42,493.13

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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.