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Finding the Fourth Proportional to 61,213.20, 91,747.80 and 34,942.80

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Solution

The fourth proportional to 61,213.20, 91,747.80 and 34,942.80 is: 52,373.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,213.20 : 91,747.80 = 34,942.80 : x
  2. Step 2: Convert to fraction form
    61,213.20/91,747.80 = 34,942.80/x
  3. Step 3: Cross multiply
    61,213.20x = 91,747.80 × 34,942.80
  4. Step 4: Simplify right side
    61,213.20x = 3,205,925,025.84
  5. Step 5: Solve for x
    x = 3,205,925,025.84/61,213.20
  6. Step 6: Final answer
    x = 52,373.10

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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.