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Finding the Fourth Proportional to 89,689.66, 123,773.60 and 49,405.12

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Solution

The fourth proportional to 89,689.66, 123,773.60 and 49,405.12 is: 68,180.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,689.66 : 123,773.60 = 49,405.12 : x
  2. Step 2: Convert to fraction form
    89,689.66/123,773.60 = 49,405.12/x
  3. Step 3: Cross multiply
    89,689.66x = 123,773.60 × 49,405.12
  4. Step 4: Simplify right side
    89,689.66x = 6,115,049,560.83
  5. Step 5: Solve for x
    x = 6,115,049,560.83/89,689.66
  6. Step 6: Final answer
    x = 68,180.10

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1.5x scale

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.