Home / 51,257.20-76,885.80-40,889.20

Finding the Fourth Proportional to 51,257.20, 76,885.80 and 40,889.20

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Solution

The fourth proportional to 51,257.20, 76,885.80 and 40,889.20 is: 61,333.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,257.20 : 76,885.80 = 40,889.20 : x
  2. Step 2: Convert to fraction form
    51,257.20/76,885.80 = 40,889.20/x
  3. Step 3: Cross multiply
    51,257.20x = 76,885.80 × 40,889.20
  4. Step 4: Simplify right side
    51,257.20x = 3,143,798,853.36
  5. Step 5: Solve for x
    x = 3,143,798,853.36/51,257.20
  6. Step 6: Final answer
    x = 61,333.80

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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.