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Finding the Fourth Proportional to 72,015.87, 107,814.61 and 41,938.41

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Solution

The fourth proportional to 72,015.87, 107,814.61 and 41,938.41 is: 62,785.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,015.87 : 107,814.61 = 41,938.41 : x
  2. Step 2: Convert to fraction form
    72,015.87/107,814.61 = 41,938.41/x
  3. Step 3: Cross multiply
    72,015.87x = 107,814.61 × 41,938.41
  4. Step 4: Simplify right side
    72,015.87x = 4,521,573,318.17
  5. Step 5: Solve for x
    x = 4,521,573,318.17/72,015.87
  6. Step 6: Final answer
    x = 62,785.79

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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.