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Finding the Fourth Proportional to 77,069.52, 115,604.24 and 21,665.52

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Solution

The fourth proportional to 77,069.52, 115,604.24 and 21,665.52 is: 32,498.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,069.52 : 115,604.24 = 21,665.52 : x
  2. Step 2: Convert to fraction form
    77,069.52/115,604.24 = 21,665.52/x
  3. Step 3: Cross multiply
    77,069.52x = 115,604.24 × 21,665.52
  4. Step 4: Simplify right side
    77,069.52x = 2,504,625,973.80
  5. Step 5: Solve for x
    x = 2,504,625,973.80/77,069.52
  6. Step 6: Final answer
    x = 32,498.27

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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.