Home / 86,308.31-129,480.91-27,148.59

Finding the Fourth Proportional to 86,308.31, 129,480.91 and 27,148.59

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Solution

The fourth proportional to 86,308.31, 129,480.91 and 27,148.59 is: 40,728.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,308.31 : 129,480.91 = 27,148.59 : x
  2. Step 2: Convert to fraction form
    86,308.31/129,480.91 = 27,148.59/x
  3. Step 3: Cross multiply
    86,308.31x = 129,480.91 × 27,148.59
  4. Step 4: Simplify right side
    86,308.31x = 3,515,224,070.55
  5. Step 5: Solve for x
    x = 3,515,224,070.55/86,308.31
  6. Step 6: Final answer
    x = 40,728.68

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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.