Home / 51,081.47-70,490.66-28,109.15

Finding the Fourth Proportional to 51,081.47, 70,490.66 and 28,109.15

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Solution

The fourth proportional to 51,081.47, 70,490.66 and 28,109.15 is: 38,789.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,081.47 : 70,490.66 = 28,109.15 : x
  2. Step 2: Convert to fraction form
    51,081.47/70,490.66 = 28,109.15/x
  3. Step 3: Cross multiply
    51,081.47x = 70,490.66 × 28,109.15
  4. Step 4: Simplify right side
    51,081.47x = 1,981,432,412.29
  5. Step 5: Solve for x
    x = 1,981,432,412.29/51,081.47
  6. Step 6: Final answer
    x = 38,789.65

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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.