Home / 66,726.62-100,078.40-31,191.16

Finding the Fourth Proportional to 66,726.62, 100,078.40 and 31,191.16

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Solution

The fourth proportional to 66,726.62, 100,078.40 and 31,191.16 is: 46,781.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,726.62 : 100,078.40 = 31,191.16 : x
  2. Step 2: Convert to fraction form
    66,726.62/100,078.40 = 31,191.16/x
  3. Step 3: Cross multiply
    66,726.62x = 100,078.40 × 31,191.16
  4. Step 4: Simplify right side
    66,726.62x = 3,121,561,386.94
  5. Step 5: Solve for x
    x = 3,121,561,386.94/66,726.62
  6. Step 6: Final answer
    x = 46,781.35

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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.