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Finding the Fourth Proportional to 73,959.86, 110,958.42 and 21,369

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Solution

The fourth proportional to 73,959.86, 110,958.42 and 21,369 is: 32,058.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,959.86 : 110,958.42 = 21,369 : x
  2. Step 2: Convert to fraction form
    73,959.86/110,958.42 = 21,369/x
  3. Step 3: Cross multiply
    73,959.86x = 110,958.42 × 21,369
  4. Step 4: Simplify right side
    73,959.86x = 2,371,070,476.98
  5. Step 5: Solve for x
    x = 2,371,070,476.98/73,959.86
  6. Step 6: Final answer
    x = 32,058.88

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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.