Home / 83,405.47-125,107.75-20,225.55

Finding the Fourth Proportional to 83,405.47, 125,107.75 and 20,225.55

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Solution

The fourth proportional to 83,405.47, 125,107.75 and 20,225.55 is: 30,338.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,405.47 : 125,107.75 = 20,225.55 : x
  2. Step 2: Convert to fraction form
    83,405.47/125,107.75 = 20,225.55/x
  3. Step 3: Cross multiply
    83,405.47x = 125,107.75 × 20,225.55
  4. Step 4: Simplify right side
    83,405.47x = 2,530,372,326.35
  5. Step 5: Solve for x
    x = 2,530,372,326.35/83,405.47
  6. Step 6: Final answer
    x = 30,338.21

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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.