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Finding the Fourth Proportional to 40,469.70, 60,704.55 and 12,764.10

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Solution

The fourth proportional to 40,469.70, 60,704.55 and 12,764.10 is: 19,146.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,469.70 : 60,704.55 = 12,764.10 : x
  2. Step 2: Convert to fraction form
    40,469.70/60,704.55 = 12,764.10/x
  3. Step 3: Cross multiply
    40,469.70x = 60,704.55 × 12,764.10
  4. Step 4: Simplify right side
    40,469.70x = 774,838,946.66
  5. Step 5: Solve for x
    x = 774,838,946.66/40,469.70
  6. Step 6: Final answer
    x = 19,146.15

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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.