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Finding the Fourth Proportional to 26,981.70, 40,472.55 and 26,808.90

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Solution

The fourth proportional to 26,981.70, 40,472.55 and 26,808.90 is: 40,213.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,981.70 : 40,472.55 = 26,808.90 : x
  2. Step 2: Convert to fraction form
    26,981.70/40,472.55 = 26,808.90/x
  3. Step 3: Cross multiply
    26,981.70x = 40,472.55 × 26,808.90
  4. Step 4: Simplify right side
    26,981.70x = 1,085,024,545.70
  5. Step 5: Solve for x
    x = 1,085,024,545.70/26,981.70
  6. Step 6: Final answer
    x = 40,213.35

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1.5x scale

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.