Home / 90,717.68-136,046.24-38,117.36

Finding the Fourth Proportional to 90,717.68, 136,046.24 and 38,117.36

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Solution

The fourth proportional to 90,717.68, 136,046.24 and 38,117.36 is: 57,163.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,717.68 : 136,046.24 = 38,117.36 : x
  2. Step 2: Convert to fraction form
    90,717.68/136,046.24 = 38,117.36/x
  3. Step 3: Cross multiply
    90,717.68x = 136,046.24 × 38,117.36
  4. Step 4: Simplify right side
    90,717.68x = 5,185,723,506.73
  5. Step 5: Solve for x
    x = 5,185,723,506.73/90,717.68
  6. Step 6: Final answer
    x = 57,163.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.