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Finding the Fourth Proportional to 83,663.39, 125,494.31 and 20,483.80

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Solution

The fourth proportional to 83,663.39, 125,494.31 and 20,483.80 is: 30,725.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,663.39 : 125,494.31 = 20,483.80 : x
  2. Step 2: Convert to fraction form
    83,663.39/125,494.31 = 20,483.80/x
  3. Step 3: Cross multiply
    83,663.39x = 125,494.31 × 20,483.80
  4. Step 4: Simplify right side
    83,663.39x = 2,570,600,084.65
  5. Step 5: Solve for x
    x = 2,570,600,084.65/83,663.39
  6. Step 6: Final answer
    x = 30,725.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.