Home / 83,747.60-125,621.40-31,146.20

Finding the Fourth Proportional to 83,747.60, 125,621.40 and 31,146.20

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Solution

The fourth proportional to 83,747.60, 125,621.40 and 31,146.20 is: 46,719.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,747.60 : 125,621.40 = 31,146.20 : x
  2. Step 2: Convert to fraction form
    83,747.60/125,621.40 = 31,146.20/x
  3. Step 3: Cross multiply
    83,747.60x = 125,621.40 × 31,146.20
  4. Step 4: Simplify right side
    83,747.60x = 3,912,629,248.68
  5. Step 5: Solve for x
    x = 3,912,629,248.68/83,747.60
  6. Step 6: Final answer
    x = 46,719.30

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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.