Home / 86,626.38-129,791.70-47,112.96

Finding the Fourth Proportional to 86,626.38, 129,791.70 and 47,112.96

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Solution

The fourth proportional to 86,626.38, 129,791.70 and 47,112.96 is: 70,589.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,626.38 : 129,791.70 = 47,112.96 : x
  2. Step 2: Convert to fraction form
    86,626.38/129,791.70 = 47,112.96/x
  3. Step 3: Cross multiply
    86,626.38x = 129,791.70 × 47,112.96
  4. Step 4: Simplify right side
    86,626.38x = 6,114,871,170.43
  5. Step 5: Solve for x
    x = 6,114,871,170.43/86,626.38
  6. Step 6: Final answer
    x = 70,589.02

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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.