Home / 76,934.52-115,392.24-20,779.20

Finding the Fourth Proportional to 76,934.52, 115,392.24 and 20,779.20

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Solution

The fourth proportional to 76,934.52, 115,392.24 and 20,779.20 is: 31,166.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,934.52 : 115,392.24 = 20,779.20 : x
  2. Step 2: Convert to fraction form
    76,934.52/115,392.24 = 20,779.20/x
  3. Step 3: Cross multiply
    76,934.52x = 115,392.24 × 20,779.20
  4. Step 4: Simplify right side
    76,934.52x = 2,397,758,433.41
  5. Step 5: Solve for x
    x = 2,397,758,433.41/76,934.52
  6. Step 6: Final answer
    x = 31,166.22

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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.