Home / 43,221-64,839.35-21,034.39

Finding the Fourth Proportional to 43,221, 64,839.35 and 21,034.39

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Solution

The fourth proportional to 43,221, 64,839.35 and 21,034.39 is: 31,555.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,221 : 64,839.35 = 21,034.39 : x
  2. Step 2: Convert to fraction form
    43,221/64,839.35 = 21,034.39/x
  3. Step 3: Cross multiply
    43,221x = 64,839.35 × 21,034.39
  4. Step 4: Simplify right side
    43,221x = 1,363,856,175.25
  5. Step 5: Solve for x
    x = 1,363,856,175.25/43,221
  6. Step 6: Final answer
    x = 31,555.41

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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.