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Finding the Fourth Proportional to 64,620, 96,924.40 and 22,489.20

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Solution

The fourth proportional to 64,620, 96,924.40 and 22,489.20 is: 33,731.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,620 : 96,924.40 = 22,489.20 : x
  2. Step 2: Convert to fraction form
    64,620/96,924.40 = 22,489.20/x
  3. Step 3: Cross multiply
    64,620x = 96,924.40 × 22,489.20
  4. Step 4: Simplify right side
    64,620x = 2,179,752,160.26
  5. Step 5: Solve for x
    x = 2,179,752,160.26/64,620
  6. Step 6: Final answer
    x = 33,731.85

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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.