Home / 83,615.20-125,422.08-21,285.60

Finding the Fourth Proportional to 83,615.20, 125,422.08 and 21,285.60

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Solution

The fourth proportional to 83,615.20, 125,422.08 and 21,285.60 is: 31,928.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,615.20 : 125,422.08 = 21,285.60 : x
  2. Step 2: Convert to fraction form
    83,615.20/125,422.08 = 21,285.60/x
  3. Step 3: Cross multiply
    83,615.20x = 125,422.08 × 21,285.60
  4. Step 4: Simplify right side
    83,615.20x = 2,669,684,226.05
  5. Step 5: Solve for x
    x = 2,669,684,226.05/83,615.20
  6. Step 6: Final answer
    x = 31,928.22

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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.