Home / 72,581,609.70-108,872,414.55-18,728,921.70

Finding the Fourth Proportional to 72,581,609.70, 108,872,414.55 and 18,728,921.70

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Solution

The fourth proportional to 72,581,609.70, 108,872,414.55 and 18,728,921.70 is: 28,093,382.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,581,609.70 : 108,872,414.55 = 18,728,921.70 : x
  2. Step 2: Convert to fraction form
    72,581,609.70/108,872,414.55 = 18,728,921.70/x
  3. Step 3: Cross multiply
    72,581,609.70x = 108,872,414.55 × 18,728,921.70
  4. Step 4: Simplify right side
    72,581,609.70x = 2,039,062,927,396,890.50
  5. Step 5: Solve for x
    x = 2,039,062,927,396,890.50/72,581,609.70
  6. Step 6: Final answer
    x = 28,093,382.55

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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.