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Finding the Fourth Proportional to 42,743,841.70, 64,110,841.80 and 12,451,704.70

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Solution

The fourth proportional to 42,743,841.70, 64,110,841.80 and 12,451,704.70 is: 18,676,123.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,743,841.70 : 64,110,841.80 = 12,451,704.70 : x
  2. Step 2: Convert to fraction form
    42,743,841.70/64,110,841.80 = 12,451,704.70/x
  3. Step 3: Cross multiply
    42,743,841.70x = 64,110,841.80 × 12,451,704.70
  4. Step 4: Simplify right side
    42,743,841.70x = 798,289,270,162,016.38
  5. Step 5: Solve for x
    x = 798,289,270,162,016.38/42,743,841.70
  6. Step 6: Final answer
    x = 18,676,123.59

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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.