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Finding the Fourth Proportional to 87,658, 131,487 and 29,290

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Solution

The fourth proportional to 87,658, 131,487 and 29,290 is: 43,935

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,658 : 131,487 = 29,290 : x
  2. Step 2: Convert to fraction form
    87,658/131,487 = 29,290/x
  3. Step 3: Cross multiply
    87,658x = 131,487 × 29,290
  4. Step 4: Simplify right side
    87,658x = 3,851,254,230
  5. Step 5: Solve for x
    x = 3,851,254,230/87,658
  6. Step 6: Final answer
    x = 43,935

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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.