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Finding the Fourth Proportional to 89,693.15, 123,775.97 and 49,405.97

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Solution

The fourth proportional to 89,693.15, 123,775.97 and 49,405.97 is: 68,179.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,693.15 : 123,775.97 = 49,405.97 : x
  2. Step 2: Convert to fraction form
    89,693.15/123,775.97 = 49,405.97/x
  3. Step 3: Cross multiply
    89,693.15x = 123,775.97 × 49,405.97
  4. Step 4: Simplify right side
    89,693.15x = 6,115,271,922.95
  5. Step 5: Solve for x
    x = 6,115,271,922.95/89,693.15
  6. Step 6: Final answer
    x = 68,179.93

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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.