Home / 52,031.97-78,048.40-12,589.12

Finding the Fourth Proportional to 52,031.97, 78,048.40 and 12,589.12

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Solution

The fourth proportional to 52,031.97, 78,048.40 and 12,589.12 is: 18,883.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,031.97 : 78,048.40 = 12,589.12 : x
  2. Step 2: Convert to fraction form
    52,031.97/78,048.40 = 12,589.12/x
  3. Step 3: Cross multiply
    52,031.97x = 78,048.40 × 12,589.12
  4. Step 4: Simplify right side
    52,031.97x = 982,560,283.17
  5. Step 5: Solve for x
    x = 982,560,283.17/52,031.97
  6. Step 6: Final answer
    x = 18,883.78

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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.