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Finding the Fourth Proportional to 85,591.62, 128,394 and 23,260.50

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Solution

The fourth proportional to 85,591.62, 128,394 and 23,260.50 is: 34,892.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,591.62 : 128,394 = 23,260.50 : x
  2. Step 2: Convert to fraction form
    85,591.62/128,394 = 23,260.50/x
  3. Step 3: Cross multiply
    85,591.62x = 128,394 × 23,260.50
  4. Step 4: Simplify right side
    85,591.62x = 2,986,508,637
  5. Step 5: Solve for x
    x = 2,986,508,637/85,591.62
  6. Step 6: Final answer
    x = 34,892.54

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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.