Home / 67,320.32-100,980.48-20,572.80

Finding the Fourth Proportional to 67,320.32, 100,980.48 and 20,572.80

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Solution

The fourth proportional to 67,320.32, 100,980.48 and 20,572.80 is: 30,859.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,320.32 : 100,980.48 = 20,572.80 : x
  2. Step 2: Convert to fraction form
    67,320.32/100,980.48 = 20,572.80/x
  3. Step 3: Cross multiply
    67,320.32x = 100,980.48 × 20,572.80
  4. Step 4: Simplify right side
    67,320.32x = 2,077,451,218.94
  5. Step 5: Solve for x
    x = 2,077,451,218.94/67,320.32
  6. Step 6: Final answer
    x = 30,859.20

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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.