Home / 83,612.20-125,437.76-28,208.20

Finding the Fourth Proportional to 83,612.20, 125,437.76 and 28,208.20

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Solution

The fourth proportional to 83,612.20, 125,437.76 and 28,208.20 is: 42,318.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,612.20 : 125,437.76 = 28,208.20 : x
  2. Step 2: Convert to fraction form
    83,612.20/125,437.76 = 28,208.20/x
  3. Step 3: Cross multiply
    83,612.20x = 125,437.76 × 28,208.20
  4. Step 4: Simplify right side
    83,612.20x = 3,538,373,421.63
  5. Step 5: Solve for x
    x = 3,538,373,421.63/83,612.20
  6. Step 6: Final answer
    x = 42,318.87

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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.