Home / 56,871.20-85,306.79-30,539.72

Finding the Fourth Proportional to 56,871.20, 85,306.79 and 30,539.72

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Solution

The fourth proportional to 56,871.20, 85,306.79 and 30,539.72 is: 45,809.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,871.20 : 85,306.79 = 30,539.72 : x
  2. Step 2: Convert to fraction form
    56,871.20/85,306.79 = 30,539.72/x
  3. Step 3: Cross multiply
    56,871.20x = 85,306.79 × 30,539.72
  4. Step 4: Simplify right side
    56,871.20x = 2,605,245,480.70
  5. Step 5: Solve for x
    x = 2,605,245,480.70/56,871.20
  6. Step 6: Final answer
    x = 45,809.57

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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.