Home / 72,439,648.20-108,664,721.10-43,623,736.20

Finding the Fourth Proportional to 72,439,648.20, 108,664,721.10 and 43,623,736.20

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Solution

The fourth proportional to 72,439,648.20, 108,664,721.10 and 43,623,736.20 is: 65,438,765.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,439,648.20 : 108,664,721.10 = 43,623,736.20 : x
  2. Step 2: Convert to fraction form
    72,439,648.20/108,664,721.10 = 43,623,736.20/x
  3. Step 3: Cross multiply
    72,439,648.20x = 108,664,721.10 × 43,623,736.20
  4. Step 4: Simplify right side
    72,439,648.20x = 4,740,361,127,512,974
  5. Step 5: Solve for x
    x = 4,740,361,127,512,974/72,439,648.20
  6. Step 6: Final answer
    x = 65,438,765.17

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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.