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Finding the Fourth Proportional to 70,981.65, 97,951.41 and 40,745.70

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Solution

The fourth proportional to 70,981.65, 97,951.41 and 40,745.70 is: 56,227.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,981.65 : 97,951.41 = 40,745.70 : x
  2. Step 2: Convert to fraction form
    70,981.65/97,951.41 = 40,745.70/x
  3. Step 3: Cross multiply
    70,981.65x = 97,951.41 × 40,745.70
  4. Step 4: Simplify right side
    70,981.65x = 3,991,098,766.44
  5. Step 5: Solve for x
    x = 3,991,098,766.44/70,981.65
  6. Step 6: Final answer
    x = 56,227.19

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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.