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Finding the Fourth Proportional to 83,599.60, 125,401.32 and 21,270.64

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Solution

The fourth proportional to 83,599.60, 125,401.32 and 21,270.64 is: 31,906.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,599.60 : 125,401.32 = 21,270.64 : x
  2. Step 2: Convert to fraction form
    83,599.60/125,401.32 = 21,270.64/x
  3. Step 3: Cross multiply
    83,599.60x = 125,401.32 × 21,270.64
  4. Step 4: Simplify right side
    83,599.60x = 2,667,366,333.24
  5. Step 5: Solve for x
    x = 2,667,366,333.24/83,599.60
  6. Step 6: Final answer
    x = 31,906.45

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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.