Home / 51,279.68-70,766.19-28,618.31

Finding the Fourth Proportional to 51,279.68, 70,766.19 and 28,618.31

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Solution

The fourth proportional to 51,279.68, 70,766.19 and 28,618.31 is: 39,493.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,279.68 : 70,766.19 = 28,618.31 : x
  2. Step 2: Convert to fraction form
    51,279.68/70,766.19 = 28,618.31/x
  3. Step 3: Cross multiply
    51,279.68x = 70,766.19 × 28,618.31
  4. Step 4: Simplify right side
    51,279.68x = 2,025,208,939.85
  5. Step 5: Solve for x
    x = 2,025,208,939.85/51,279.68
  6. Step 6: Final answer
    x = 39,493.40

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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.