Home / 89,726.40-123,820.80-49,443.90

Finding the Fourth Proportional to 89,726.40, 123,820.80 and 49,443.90

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Solution

The fourth proportional to 89,726.40, 123,820.80 and 49,443.90 is: 68,231.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,726.40 : 123,820.80 = 49,443.90 : x
  2. Step 2: Convert to fraction form
    89,726.40/123,820.80 = 49,443.90/x
  3. Step 3: Cross multiply
    89,726.40x = 123,820.80 × 49,443.90
  4. Step 4: Simplify right side
    89,726.40x = 6,122,183,253.12
  5. Step 5: Solve for x
    x = 6,122,183,253.12/89,726.40
  6. Step 6: Final answer
    x = 68,231.68

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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.