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Finding the Fourth Proportional to 70,914,638.40, 106,375,456.80 and 36,902,414.40

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Solution

The fourth proportional to 70,914,638.40, 106,375,456.80 and 36,902,414.40 is: 55,355,442.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,914,638.40 : 106,375,456.80 = 36,902,414.40 : x
  2. Step 2: Convert to fraction form
    70,914,638.40/106,375,456.80 = 36,902,414.40/x
  3. Step 3: Cross multiply
    70,914,638.40x = 106,375,456.80 × 36,902,414.40
  4. Step 4: Simplify right side
    70,914,638.40x = 3,925,511,188,822,897.50
  5. Step 5: Solve for x
    x = 3,925,511,188,822,897.50/70,914,638.40
  6. Step 6: Final answer
    x = 55,355,442.51

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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.