Home / 84,229.12-126,356.16-28,050.88

Finding the Fourth Proportional to 84,229.12, 126,356.16 and 28,050.88

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Solution

The fourth proportional to 84,229.12, 126,356.16 and 28,050.88 is: 42,080.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,229.12 : 126,356.16 = 28,050.88 : x
  2. Step 2: Convert to fraction form
    84,229.12/126,356.16 = 28,050.88/x
  3. Step 3: Cross multiply
    84,229.12x = 126,356.16 × 28,050.88
  4. Step 4: Simplify right side
    84,229.12x = 3,544,401,481.42
  5. Step 5: Solve for x
    x = 3,544,401,481.42/84,229.12
  6. Step 6: Final answer
    x = 42,080.48

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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.