Home / 51,378.80-70,901.30-28,717.88

Finding the Fourth Proportional to 51,378.80, 70,901.30 and 28,717.88

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Solution

The fourth proportional to 51,378.80, 70,901.30 and 28,717.88 is: 39,629.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,378.80 : 70,901.30 = 28,717.88 : x
  2. Step 2: Convert to fraction form
    51,378.80/70,901.30 = 28,717.88/x
  3. Step 3: Cross multiply
    51,378.80x = 70,901.30 × 28,717.88
  4. Step 4: Simplify right side
    51,378.80x = 2,036,135,025.24
  5. Step 5: Solve for x
    x = 2,036,135,025.24/51,378.80
  6. Step 6: Final answer
    x = 39,629.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.