Home / 31,282,619.72-43,161,909.90-18,882,912.92

Finding the Fourth Proportional to 31,282,619.72, 43,161,909.90 and 18,882,912.92

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Solution

The fourth proportional to 31,282,619.72, 43,161,909.90 and 18,882,912.92 is: 26,053,527.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,282,619.72 : 43,161,909.90 = 18,882,912.92 : x
  2. Step 2: Convert to fraction form
    31,282,619.72/43,161,909.90 = 18,882,912.92/x
  3. Step 3: Cross multiply
    31,282,619.72x = 43,161,909.90 × 18,882,912.92
  4. Step 4: Simplify right side
    31,282,619.72x = 815,022,586,102,586
  5. Step 5: Solve for x
    x = 815,022,586,102,586/31,282,619.72
  6. Step 6: Final answer
    x = 26,053,527.27

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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.