Home / 51,078.20-70,488.45-28,108.33

Finding the Fourth Proportional to 51,078.20, 70,488.45 and 28,108.33

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Solution

The fourth proportional to 51,078.20, 70,488.45 and 28,108.33 is: 38,789.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,078.20 : 70,488.45 = 28,108.33 : x
  2. Step 2: Convert to fraction form
    51,078.20/70,488.45 = 28,108.33/x
  3. Step 3: Cross multiply
    51,078.20x = 70,488.45 × 28,108.33
  4. Step 4: Simplify right side
    51,078.20x = 1,981,312,437.57
  5. Step 5: Solve for x
    x = 1,981,312,437.57/51,078.20
  6. Step 6: Final answer
    x = 38,789.79

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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.