Home / 86,538.88-129,676.56-64,247.68

Finding the Fourth Proportional to 86,538.88, 129,676.56 and 64,247.68

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Solution

The fourth proportional to 86,538.88, 129,676.56 and 64,247.68 is: 96,273.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,538.88 : 129,676.56 = 64,247.68 : x
  2. Step 2: Convert to fraction form
    86,538.88/129,676.56 = 64,247.68/x
  3. Step 3: Cross multiply
    86,538.88x = 129,676.56 × 64,247.68
  4. Step 4: Simplify right side
    86,538.88x = 8,331,418,130.38
  5. Step 5: Solve for x
    x = 8,331,418,130.38/86,538.88
  6. Step 6: Final answer
    x = 96,273.70

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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.