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Finding the Fourth Proportional to 72,888, 109,338.75 and 33,439.38

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Solution

The fourth proportional to 72,888, 109,338.75 and 33,439.38 is: 50,162.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,888 : 109,338.75 = 33,439.38 : x
  2. Step 2: Convert to fraction form
    72,888/109,338.75 = 33,439.38/x
  3. Step 3: Cross multiply
    72,888x = 109,338.75 × 33,439.38
  4. Step 4: Simplify right side
    72,888x = 3,656,220,009.98
  5. Step 5: Solve for x
    x = 3,656,220,009.98/72,888
  6. Step 6: Final answer
    x = 50,162.17

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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.