Home / 89,426.20-123,405.78-49,139.88

Finding the Fourth Proportional to 89,426.20, 123,405.78 and 49,139.88

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Solution

The fourth proportional to 89,426.20, 123,405.78 and 49,139.88 is: 67,811.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,426.20 : 123,405.78 = 49,139.88 : x
  2. Step 2: Convert to fraction form
    89,426.20/123,405.78 = 49,139.88/x
  3. Step 3: Cross multiply
    89,426.20x = 123,405.78 × 49,139.88
  4. Step 4: Simplify right side
    89,426.20x = 6,064,145,220.51
  5. Step 5: Solve for x
    x = 6,064,145,220.51/89,426.20
  6. Step 6: Final answer
    x = 67,811.73

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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.