Home / 51,206.20-76,809.30-17,915.20

Finding the Fourth Proportional to 51,206.20, 76,809.30 and 17,915.20

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Solution

The fourth proportional to 51,206.20, 76,809.30 and 17,915.20 is: 26,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,206.20 : 76,809.30 = 17,915.20 : x
  2. Step 2: Convert to fraction form
    51,206.20/76,809.30 = 17,915.20/x
  3. Step 3: Cross multiply
    51,206.20x = 76,809.30 × 17,915.20
  4. Step 4: Simplify right side
    51,206.20x = 1,376,053,971.36
  5. Step 5: Solve for x
    x = 1,376,053,971.36/51,206.20
  6. Step 6: Final answer
    x = 26,872.80

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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.