Home / 86,278.34-129,351.62-27,079.76

Finding the Fourth Proportional to 86,278.34, 129,351.62 and 27,079.76

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Solution

The fourth proportional to 86,278.34, 129,351.62 and 27,079.76 is: 40,598.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,278.34 : 129,351.62 = 27,079.76 : x
  2. Step 2: Convert to fraction form
    86,278.34/129,351.62 = 27,079.76/x
  3. Step 3: Cross multiply
    86,278.34x = 129,351.62 × 27,079.76
  4. Step 4: Simplify right side
    86,278.34x = 3,502,810,246.15
  5. Step 5: Solve for x
    x = 3,502,810,246.15/86,278.34
  6. Step 6: Final answer
    x = 40,598.96

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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.