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Finding the Fourth Proportional to 29,878.92, 41,143.98 and 29,215.90

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Solution

The fourth proportional to 29,878.92, 41,143.98 and 29,215.90 is: 40,230.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,878.92 : 41,143.98 = 29,215.90 : x
  2. Step 2: Convert to fraction form
    29,878.92/41,143.98 = 29,215.90/x
  3. Step 3: Cross multiply
    29,878.92x = 41,143.98 × 29,215.90
  4. Step 4: Simplify right side
    29,878.92x = 1,202,058,405.28
  5. Step 5: Solve for x
    x = 1,202,058,405.28/29,878.92
  6. Step 6: Final answer
    x = 40,230.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.