Home / 51,357.20-76,906.20-40,989.20

Finding the Fourth Proportional to 51,357.20, 76,906.20 and 40,989.20

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Solution

The fourth proportional to 51,357.20, 76,906.20 and 40,989.20 is: 61,380.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,357.20 : 76,906.20 = 40,989.20 : x
  2. Step 2: Convert to fraction form
    51,357.20/76,906.20 = 40,989.20/x
  3. Step 3: Cross multiply
    51,357.20x = 76,906.20 × 40,989.20
  4. Step 4: Simplify right side
    51,357.20x = 3,152,323,613.04
  5. Step 5: Solve for x
    x = 3,152,323,613.04/51,357.20
  6. Step 6: Final answer
    x = 61,380.36

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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.