Home / 72,499,521.12-100,052,175.68-39,907,505.76

Finding the Fourth Proportional to 72,499,521.12, 100,052,175.68 and 39,907,505.76

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Solution

The fourth proportional to 72,499,521.12, 100,052,175.68 and 39,907,505.76 is: 55,073,919.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,499,521.12 : 100,052,175.68 = 39,907,505.76 : x
  2. Step 2: Convert to fraction form
    72,499,521.12/100,052,175.68 = 39,907,505.76/x
  3. Step 3: Cross multiply
    72,499,521.12x = 100,052,175.68 × 39,907,505.76
  4. Step 4: Simplify right side
    72,499,521.12x = 3,992,832,777,250,132
  5. Step 5: Solve for x
    x = 3,992,832,777,250,132/72,499,521.12
  6. Step 6: Final answer
    x = 55,073,919.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.