Home / 89,811.76-123,934.50-49,525.78

Finding the Fourth Proportional to 89,811.76, 123,934.50 and 49,525.78

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Solution

The fourth proportional to 89,811.76, 123,934.50 and 49,525.78 is: 68,342.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,811.76 : 123,934.50 = 49,525.78 : x
  2. Step 2: Convert to fraction form
    89,811.76/123,934.50 = 49,525.78/x
  3. Step 3: Cross multiply
    89,811.76x = 123,934.50 × 49,525.78
  4. Step 4: Simplify right side
    89,811.76x = 6,137,952,781.41
  5. Step 5: Solve for x
    x = 6,137,952,781.41/89,811.76
  6. Step 6: Final answer
    x = 68,342.42

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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.