Home / 51,307.20-76,960.80-40,939.20

Finding the Fourth Proportional to 51,307.20, 76,960.80 and 40,939.20

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Solution

The fourth proportional to 51,307.20, 76,960.80 and 40,939.20 is: 61,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,307.20 : 76,960.80 = 40,939.20 : x
  2. Step 2: Convert to fraction form
    51,307.20/76,960.80 = 40,939.20/x
  3. Step 3: Cross multiply
    51,307.20x = 76,960.80 × 40,939.20
  4. Step 4: Simplify right side
    51,307.20x = 3,150,713,583.36
  5. Step 5: Solve for x
    x = 3,150,713,583.36/51,307.20
  6. Step 6: Final answer
    x = 61,408.80

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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.