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Finding the Fourth Proportional to 90,097.68, 124,335.18 and 49,811.16

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Solution

The fourth proportional to 90,097.68, 124,335.18 and 49,811.16 is: 68,739.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,097.68 : 124,335.18 = 49,811.16 : x
  2. Step 2: Convert to fraction form
    90,097.68/124,335.18 = 49,811.16/x
  3. Step 3: Cross multiply
    90,097.68x = 124,335.18 × 49,811.16
  4. Step 4: Simplify right side
    90,097.68x = 6,193,279,544.61
  5. Step 5: Solve for x
    x = 6,193,279,544.61/90,097.68
  6. Step 6: Final answer
    x = 68,739.61

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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.