Home / 72,581,921.70-108,872,882.55-18,729,233.70

Finding the Fourth Proportional to 72,581,921.70, 108,872,882.55 and 18,729,233.70

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Solution

The fourth proportional to 72,581,921.70, 108,872,882.55 and 18,729,233.70 is: 28,093,850.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,581,921.70 : 108,872,882.55 = 18,729,233.70 : x
  2. Step 2: Convert to fraction form
    72,581,921.70/108,872,882.55 = 18,729,233.70/x
  3. Step 3: Cross multiply
    72,581,921.70x = 108,872,882.55 × 18,729,233.70
  4. Step 4: Simplify right side
    72,581,921.70x = 2,039,105,660,871,601.75
  5. Step 5: Solve for x
    x = 2,039,105,660,871,601.75/72,581,921.70
  6. Step 6: Final answer
    x = 28,093,850.55

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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.