Home / 88,162.20-121,665.28-49,920.74

Finding the Fourth Proportional to 88,162.20, 121,665.28 and 49,920.74

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Solution

The fourth proportional to 88,162.20, 121,665.28 and 49,920.74 is: 68,891.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,162.20 : 121,665.28 = 49,920.74 : x
  2. Step 2: Convert to fraction form
    88,162.20/121,665.28 = 49,920.74/x
  3. Step 3: Cross multiply
    88,162.20x = 121,665.28 × 49,920.74
  4. Step 4: Simplify right side
    88,162.20x = 6,073,620,809.91
  5. Step 5: Solve for x
    x = 6,073,620,809.91/88,162.20
  6. Step 6: Final answer
    x = 68,891.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.