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Finding the Fourth Proportional to 71,328.70, 106,952.55 and 26,956.90

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Solution

The fourth proportional to 71,328.70, 106,952.55 and 26,956.90 is: 40,420.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,328.70 : 106,952.55 = 26,956.90 : x
  2. Step 2: Convert to fraction form
    71,328.70/106,952.55 = 26,956.90/x
  3. Step 3: Cross multiply
    71,328.70x = 106,952.55 × 26,956.90
  4. Step 4: Simplify right side
    71,328.70x = 2,883,109,195.10
  5. Step 5: Solve for x
    x = 2,883,109,195.10/71,328.70
  6. Step 6: Final answer
    x = 40,420.04

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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.