Home / 51,230.49-76,851.20-21,651.31

Finding the Fourth Proportional to 51,230.49, 76,851.20 and 21,651.31

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Solution

The fourth proportional to 51,230.49, 76,851.20 and 21,651.31 is: 32,479.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,230.49 : 76,851.20 = 21,651.31 : x
  2. Step 2: Convert to fraction form
    51,230.49/76,851.20 = 21,651.31/x
  3. Step 3: Cross multiply
    51,230.49x = 76,851.20 × 21,651.31
  4. Step 4: Simplify right side
    51,230.49x = 1,663,929,155.07
  5. Step 5: Solve for x
    x = 1,663,929,155.07/51,230.49
  6. Step 6: Final answer
    x = 32,479.27

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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.