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Finding the Fourth Proportional to 89,221, 133,883.34 and 39,973

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Solution

The fourth proportional to 89,221, 133,883.34 and 39,973 is: 59,982.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,221 : 133,883.34 = 39,973 : x
  2. Step 2: Convert to fraction form
    89,221/133,883.34 = 39,973/x
  3. Step 3: Cross multiply
    89,221x = 133,883.34 × 39,973
  4. Step 4: Simplify right side
    89,221x = 5,351,718,749.82
  5. Step 5: Solve for x
    x = 5,351,718,749.82/89,221
  6. Step 6: Final answer
    x = 59,982.73

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1.5x scale

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.