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Finding the Fourth Proportional to 72,063.66, 108,161.93 and 36,549.90

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Solution

The fourth proportional to 72,063.66, 108,161.93 and 36,549.90 is: 54,858.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,063.66 : 108,161.93 = 36,549.90 : x
  2. Step 2: Convert to fraction form
    72,063.66/108,161.93 = 36,549.90/x
  3. Step 3: Cross multiply
    72,063.66x = 108,161.93 × 36,549.90
  4. Step 4: Simplify right side
    72,063.66x = 3,953,307,816.68
  5. Step 5: Solve for x
    x = 3,953,307,816.68/72,063.66
  6. Step 6: Final answer
    x = 54,858.55

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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.