Home / 72,161.20-108,104.10-38,870.20

Finding the Fourth Proportional to 72,161.20, 108,104.10 and 38,870.20

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Solution

The fourth proportional to 72,161.20, 108,104.10 and 38,870.20 is: 58,231.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,161.20 : 108,104.10 = 38,870.20 : x
  2. Step 2: Convert to fraction form
    72,161.20/108,104.10 = 38,870.20/x
  3. Step 3: Cross multiply
    72,161.20x = 108,104.10 × 38,870.20
  4. Step 4: Simplify right side
    72,161.20x = 4,202,027,987.82
  5. Step 5: Solve for x
    x = 4,202,027,987.82/72,161.20
  6. Step 6: Final answer
    x = 58,231.13

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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.