Home / 88,031.46-121,470.39-49,780.83

Finding the Fourth Proportional to 88,031.46, 121,470.39 and 49,780.83

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Solution

The fourth proportional to 88,031.46, 121,470.39 and 49,780.83 is: 68,690.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,031.46 : 121,470.39 = 49,780.83 : x
  2. Step 2: Convert to fraction form
    88,031.46/121,470.39 = 49,780.83/x
  3. Step 3: Cross multiply
    88,031.46x = 121,470.39 × 49,780.83
  4. Step 4: Simplify right side
    88,031.46x = 6,046,896,834.62
  5. Step 5: Solve for x
    x = 6,046,896,834.62/88,031.46
  6. Step 6: Final answer
    x = 68,690.18

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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.