Home / 72,930,644.20-109,412,555.10-42,622,906.60

Finding the Fourth Proportional to 72,930,644.20, 109,412,555.10 and 42,622,906.60

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Solution

The fourth proportional to 72,930,644.20, 109,412,555.10 and 42,622,906.60 is: 63,944,054.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,930,644.20 : 109,412,555.10 = 42,622,906.60 : x
  2. Step 2: Convert to fraction form
    72,930,644.20/109,412,555.10 = 42,622,906.60/x
  3. Step 3: Cross multiply
    72,930,644.20x = 109,412,555.10 × 42,622,906.60
  4. Step 4: Simplify right side
    72,930,644.20x = 4,663,481,116,894,654
  5. Step 5: Solve for x
    x = 4,663,481,116,894,654/72,930,644.20
  6. Step 6: Final answer
    x = 63,944,054.90

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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.