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Finding the Fourth Proportional to 87,596.32, 131,394.44 and 28,432

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Solution

The fourth proportional to 87,596.32, 131,394.44 and 28,432 is: 42,647.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,596.32 : 131,394.44 = 28,432 : x
  2. Step 2: Convert to fraction form
    87,596.32/131,394.44 = 28,432/x
  3. Step 3: Cross multiply
    87,596.32x = 131,394.44 × 28,432
  4. Step 4: Simplify right side
    87,596.32x = 3,735,806,718.08
  5. Step 5: Solve for x
    x = 3,735,806,718.08/87,596.32
  6. Step 6: Final answer
    x = 42,647.99

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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.