Home / 54,108.20-81,162.30-30,780.20

Finding the Fourth Proportional to 54,108.20, 81,162.30 and 30,780.20

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Solution

The fourth proportional to 54,108.20, 81,162.30 and 30,780.20 is: 46,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,108.20 : 81,162.30 = 30,780.20 : x
  2. Step 2: Convert to fraction form
    54,108.20/81,162.30 = 30,780.20/x
  3. Step 3: Cross multiply
    54,108.20x = 81,162.30 × 30,780.20
  4. Step 4: Simplify right side
    54,108.20x = 2,498,191,826.46
  5. Step 5: Solve for x
    x = 2,498,191,826.46/54,108.20
  6. Step 6: Final answer
    x = 46,170.30

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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.