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Finding the Fourth Proportional to 87,852.67, 131,787.10 and 28,688.65

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Solution

The fourth proportional to 87,852.67, 131,787.10 and 28,688.65 is: 43,035.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,852.67 : 131,787.10 = 28,688.65 : x
  2. Step 2: Convert to fraction form
    87,852.67/131,787.10 = 28,688.65/x
  3. Step 3: Cross multiply
    87,852.67x = 131,787.10 × 28,688.65
  4. Step 4: Simplify right side
    87,852.67x = 3,780,793,692.81
  5. Step 5: Solve for x
    x = 3,780,793,692.81/87,852.67
  6. Step 6: Final answer
    x = 43,035.62

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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.