Home / 83,788.62-125,742.90-30,480.49

Finding the Fourth Proportional to 83,788.62, 125,742.90 and 30,480.49

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Solution

The fourth proportional to 83,788.62, 125,742.90 and 30,480.49 is: 45,742.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,788.62 : 125,742.90 = 30,480.49 : x
  2. Step 2: Convert to fraction form
    83,788.62/125,742.90 = 30,480.49/x
  3. Step 3: Cross multiply
    83,788.62x = 125,742.90 × 30,480.49
  4. Step 4: Simplify right side
    83,788.62x = 3,832,705,206.02
  5. Step 5: Solve for x
    x = 3,832,705,206.02/83,788.62
  6. Step 6: Final answer
    x = 45,742.55

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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.