Home / 54,306.20-81,459.30-47,739.80

Finding the Fourth Proportional to 54,306.20, 81,459.30 and 47,739.80

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Solution

The fourth proportional to 54,306.20, 81,459.30 and 47,739.80 is: 71,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,306.20 : 81,459.30 = 47,739.80 : x
  2. Step 2: Convert to fraction form
    54,306.20/81,459.30 = 47,739.80/x
  3. Step 3: Cross multiply
    54,306.20x = 81,459.30 × 47,739.80
  4. Step 4: Simplify right side
    54,306.20x = 3,888,850,690.14
  5. Step 5: Solve for x
    x = 3,888,850,690.14/54,306.20
  6. Step 6: Final answer
    x = 71,609.70

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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.