Home / 83,078.57-124,618.26-20,749.07

Finding the Fourth Proportional to 83,078.57, 124,618.26 and 20,749.07

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Solution

The fourth proportional to 83,078.57, 124,618.26 and 20,749.07 is: 31,123.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,078.57 : 124,618.26 = 20,749.07 : x
  2. Step 2: Convert to fraction form
    83,078.57/124,618.26 = 20,749.07/x
  3. Step 3: Cross multiply
    83,078.57x = 124,618.26 × 20,749.07
  4. Step 4: Simplify right side
    83,078.57x = 2,585,713,000.02
  5. Step 5: Solve for x
    x = 2,585,713,000.02/83,078.57
  6. Step 6: Final answer
    x = 31,123.71

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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.