Home / 51,351.20-76,969.56-21,348.69

Finding the Fourth Proportional to 51,351.20, 76,969.56 and 21,348.69

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Solution

The fourth proportional to 51,351.20, 76,969.56 and 21,348.69 is: 31,999.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,351.20 : 76,969.56 = 21,348.69 : x
  2. Step 2: Convert to fraction form
    51,351.20/76,969.56 = 21,348.69/x
  3. Step 3: Cross multiply
    51,351.20x = 76,969.56 × 21,348.69
  4. Step 4: Simplify right side
    51,351.20x = 1,643,199,275.88
  5. Step 5: Solve for x
    x = 1,643,199,275.88/51,351.20
  6. Step 6: Final answer
    x = 31,999.24

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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.