Home / 83,755.20-125,632.80-21,422.40

Finding the Fourth Proportional to 83,755.20, 125,632.80 and 21,422.40

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Solution

The fourth proportional to 83,755.20, 125,632.80 and 21,422.40 is: 32,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,755.20 : 125,632.80 = 21,422.40 : x
  2. Step 2: Convert to fraction form
    83,755.20/125,632.80 = 21,422.40/x
  3. Step 3: Cross multiply
    83,755.20x = 125,632.80 × 21,422.40
  4. Step 4: Simplify right side
    83,755.20x = 2,691,356,094.72
  5. Step 5: Solve for x
    x = 2,691,356,094.72/83,755.20
  6. Step 6: Final answer
    x = 32,133.60

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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.