Home / 40,934.20-61,415.70-20,143.80

Finding the Fourth Proportional to 40,934.20, 61,415.70 and 20,143.80

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Solution

The fourth proportional to 40,934.20, 61,415.70 and 20,143.80 is: 30,222.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,934.20 : 61,415.70 = 20,143.80 : x
  2. Step 2: Convert to fraction form
    40,934.20/61,415.70 = 20,143.80/x
  3. Step 3: Cross multiply
    40,934.20x = 61,415.70 × 20,143.80
  4. Step 4: Simplify right side
    40,934.20x = 1,237,145,577.66
  5. Step 5: Solve for x
    x = 1,237,145,577.66/40,934.20
  6. Step 6: Final answer
    x = 30,222.79

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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.