Home / 48,278.80-72,418.20-20,573.20

Finding the Fourth Proportional to 48,278.80, 72,418.20 and 20,573.20

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Solution

The fourth proportional to 48,278.80, 72,418.20 and 20,573.20 is: 30,859.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,278.80 : 72,418.20 = 20,573.20 : x
  2. Step 2: Convert to fraction form
    48,278.80/72,418.20 = 20,573.20/x
  3. Step 3: Cross multiply
    48,278.80x = 72,418.20 × 20,573.20
  4. Step 4: Simplify right side
    48,278.80x = 1,489,874,112.24
  5. Step 5: Solve for x
    x = 1,489,874,112.24/48,278.80
  6. Step 6: Final answer
    x = 30,859.80

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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.