Home / 80,948.52-121,422.22-21,779.24

Finding the Fourth Proportional to 80,948.52, 121,422.22 and 21,779.24

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Solution

The fourth proportional to 80,948.52, 121,422.22 and 21,779.24 is: 32,668.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,948.52 : 121,422.22 = 21,779.24 : x
  2. Step 2: Convert to fraction form
    80,948.52/121,422.22 = 21,779.24/x
  3. Step 3: Cross multiply
    80,948.52x = 121,422.22 × 21,779.24
  4. Step 4: Simplify right side
    80,948.52x = 2,644,483,670.71
  5. Step 5: Solve for x
    x = 2,644,483,670.71/80,948.52
  6. Step 6: Final answer
    x = 32,668.71

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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.