Home / 51,540.28-71,126.50-28,879.12

Finding the Fourth Proportional to 51,540.28, 71,126.50 and 28,879.12

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Solution

The fourth proportional to 51,540.28, 71,126.50 and 28,879.12 is: 39,853.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,540.28 : 71,126.50 = 28,879.12 : x
  2. Step 2: Convert to fraction form
    51,540.28/71,126.50 = 28,879.12/x
  3. Step 3: Cross multiply
    51,540.28x = 71,126.50 × 28,879.12
  4. Step 4: Simplify right side
    51,540.28x = 2,054,070,728.68
  5. Step 5: Solve for x
    x = 2,054,070,728.68/51,540.28
  6. Step 6: Final answer
    x = 39,853.70

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1.5x scale

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.