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Finding the Fourth Proportional to 72,365.67, 108,537.84 and 36,812.34

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Solution

The fourth proportional to 72,365.67, 108,537.84 and 36,812.34 is: 55,213.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,365.67 : 108,537.84 = 36,812.34 : x
  2. Step 2: Convert to fraction form
    72,365.67/108,537.84 = 36,812.34/x
  3. Step 3: Cross multiply
    72,365.67x = 108,537.84 × 36,812.34
  4. Step 4: Simplify right side
    72,365.67x = 3,995,531,868.95
  5. Step 5: Solve for x
    x = 3,995,531,868.95/72,365.67
  6. Step 6: Final answer
    x = 55,213.08

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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.