Home / 91,221.36-136,806.12-57,891.12

Finding the Fourth Proportional to 91,221.36, 136,806.12 and 57,891.12

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Solution

The fourth proportional to 91,221.36, 136,806.12 and 57,891.12 is: 86,820.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,221.36 : 136,806.12 = 57,891.12 : x
  2. Step 2: Convert to fraction form
    91,221.36/136,806.12 = 57,891.12/x
  3. Step 3: Cross multiply
    91,221.36x = 136,806.12 × 57,891.12
  4. Step 4: Simplify right side
    91,221.36x = 7,919,859,509.65
  5. Step 5: Solve for x
    x = 7,919,859,509.65/91,221.36
  6. Step 6: Final answer
    x = 86,820.23

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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.