Home / 51,207.20-76,681.20-40,839.20

Finding the Fourth Proportional to 51,207.20, 76,681.20 and 40,839.20

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Solution

The fourth proportional to 51,207.20, 76,681.20 and 40,839.20 is: 61,155.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,207.20 : 76,681.20 = 40,839.20 : x
  2. Step 2: Convert to fraction form
    51,207.20/76,681.20 = 40,839.20/x
  3. Step 3: Cross multiply
    51,207.20x = 76,681.20 × 40,839.20
  4. Step 4: Simplify right side
    51,207.20x = 3,131,598,863.04
  5. Step 5: Solve for x
    x = 3,131,598,863.04/51,207.20
  6. Step 6: Final answer
    x = 61,155.44

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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.