Home / 87,278.40-130,615.20-52,243.20

Finding the Fourth Proportional to 87,278.40, 130,615.20 and 52,243.20

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Solution

The fourth proportional to 87,278.40, 130,615.20 and 52,243.20 is: 78,183.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,278.40 : 130,615.20 = 52,243.20 : x
  2. Step 2: Convert to fraction form
    87,278.40/130,615.20 = 52,243.20/x
  3. Step 3: Cross multiply
    87,278.40x = 130,615.20 × 52,243.20
  4. Step 4: Simplify right side
    87,278.40x = 6,823,756,016.64
  5. Step 5: Solve for x
    x = 6,823,756,016.64/87,278.40
  6. Step 6: Final answer
    x = 78,183.79

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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.