Home / 83,609.88-125,414.36-20,430.35

Finding the Fourth Proportional to 83,609.88, 125,414.36 and 20,430.35

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Solution

The fourth proportional to 83,609.88, 125,414.36 and 20,430.35 is: 30,645.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,609.88 : 125,414.36 = 20,430.35 : x
  2. Step 2: Convert to fraction form
    83,609.88/125,414.36 = 20,430.35/x
  3. Step 3: Cross multiply
    83,609.88x = 125,414.36 × 20,430.35
  4. Step 4: Simplify right side
    83,609.88x = 2,562,258,854.14
  5. Step 5: Solve for x
    x = 2,562,258,854.14/83,609.88
  6. Step 6: Final answer
    x = 30,645.41

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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.