Home / 86,375.43-129,270.52-53,116.56

Finding the Fourth Proportional to 86,375.43, 129,270.52 and 53,116.56

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Solution

The fourth proportional to 86,375.43, 129,270.52 and 53,116.56 is: 79,494.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,375.43 : 129,270.52 = 53,116.56 : x
  2. Step 2: Convert to fraction form
    86,375.43/129,270.52 = 53,116.56/x
  3. Step 3: Cross multiply
    86,375.43x = 129,270.52 × 53,116.56
  4. Step 4: Simplify right side
    86,375.43x = 6,866,405,331.81
  5. Step 5: Solve for x
    x = 6,866,405,331.81/86,375.43
  6. Step 6: Final answer
    x = 79,494.89

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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.