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Finding the Fourth Proportional to 89,655.62, 123,719.86 and 49,361.74

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Solution

The fourth proportional to 89,655.62, 123,719.86 and 49,361.74 is: 68,116.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,655.62 : 123,719.86 = 49,361.74 : x
  2. Step 2: Convert to fraction form
    89,655.62/123,719.86 = 49,361.74/x
  3. Step 3: Cross multiply
    89,655.62x = 123,719.86 × 49,361.74
  4. Step 4: Simplify right side
    89,655.62x = 6,107,027,562.16
  5. Step 5: Solve for x
    x = 6,107,027,562.16/89,655.62
  6. Step 6: Final answer
    x = 68,116.51

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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.