Home / 48,540.98-72,839.78-20,459.32

Finding the Fourth Proportional to 48,540.98, 72,839.78 and 20,459.32

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Solution

The fourth proportional to 48,540.98, 72,839.78 and 20,459.32 is: 30,700.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,540.98 : 72,839.78 = 20,459.32 : x
  2. Step 2: Convert to fraction form
    48,540.98/72,839.78 = 20,459.32/x
  3. Step 3: Cross multiply
    48,540.98x = 72,839.78 × 20,459.32
  4. Step 4: Simplify right side
    48,540.98x = 1,490,252,367.75
  5. Step 5: Solve for x
    x = 1,490,252,367.75/48,540.98
  6. Step 6: Final answer
    x = 30,700.91

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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.