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Finding the Fourth Proportional to 75,540.65, 113,760.67 and 65,797.61

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Solution

The fourth proportional to 75,540.65, 113,760.67 and 65,797.61 is: 99,088.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,540.65 : 113,760.67 = 65,797.61 : x
  2. Step 2: Convert to fraction form
    75,540.65/113,760.67 = 65,797.61/x
  3. Step 3: Cross multiply
    75,540.65x = 113,760.67 × 65,797.61
  4. Step 4: Simplify right side
    75,540.65x = 7,485,179,869.01
  5. Step 5: Solve for x
    x = 7,485,179,869.01/75,540.65
  6. Step 6: Final answer
    x = 99,088.11

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.