Home / 72,170.20-108,255.36-19,579.69

Finding the Fourth Proportional to 72,170.20, 108,255.36 and 19,579.69

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Solution

The fourth proportional to 72,170.20, 108,255.36 and 19,579.69 is: 29,369.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,170.20 : 108,255.36 = 19,579.69 : x
  2. Step 2: Convert to fraction form
    72,170.20/108,255.36 = 19,579.69/x
  3. Step 3: Cross multiply
    72,170.20x = 108,255.36 × 19,579.69
  4. Step 4: Simplify right side
    72,170.20x = 2,119,606,086.61
  5. Step 5: Solve for x
    x = 2,119,606,086.61/72,170.20
  6. Step 6: Final answer
    x = 29,369.55

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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.