Home / 51,277.20-76,915.80-21,687.36

Finding the Fourth Proportional to 51,277.20, 76,915.80 and 21,687.36

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Solution

The fourth proportional to 51,277.20, 76,915.80 and 21,687.36 is: 32,531.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,277.20 : 76,915.80 = 21,687.36 : x
  2. Step 2: Convert to fraction form
    51,277.20/76,915.80 = 21,687.36/x
  3. Step 3: Cross multiply
    51,277.20x = 76,915.80 × 21,687.36
  4. Step 4: Simplify right side
    51,277.20x = 1,668,100,644.29
  5. Step 5: Solve for x
    x = 1,668,100,644.29/51,277.20
  6. Step 6: Final answer
    x = 32,531.04

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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.