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Finding the Fourth Proportional to 72,476.44, 108,696.66 and 40,900.36

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Solution

The fourth proportional to 72,476.44, 108,696.66 and 40,900.36 is: 61,340.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,476.44 : 108,696.66 = 40,900.36 : x
  2. Step 2: Convert to fraction form
    72,476.44/108,696.66 = 40,900.36/x
  3. Step 3: Cross multiply
    72,476.44x = 108,696.66 × 40,900.36
  4. Step 4: Simplify right side
    72,476.44x = 4,445,732,524.80
  5. Step 5: Solve for x
    x = 4,445,732,524.80/72,476.44
  6. Step 6: Final answer
    x = 61,340.38

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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.