Home / 45,135.52-67,664.40-21,778.36

Finding the Fourth Proportional to 45,135.52, 67,664.40 and 21,778.36

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Solution

The fourth proportional to 45,135.52, 67,664.40 and 21,778.36 is: 32,648.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,135.52 : 67,664.40 = 21,778.36 : x
  2. Step 2: Convert to fraction form
    45,135.52/67,664.40 = 21,778.36/x
  3. Step 3: Cross multiply
    45,135.52x = 67,664.40 × 21,778.36
  4. Step 4: Simplify right side
    45,135.52x = 1,473,619,662.38
  5. Step 5: Solve for x
    x = 1,473,619,662.38/45,135.52
  6. Step 6: Final answer
    x = 32,648.78

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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.