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Finding the Fourth Proportional to 68,696.64, 94,762.62 and 40,012.92

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Solution

The fourth proportional to 68,696.64, 94,762.62 and 40,012.92 is: 55,195.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,696.64 : 94,762.62 = 40,012.92 : x
  2. Step 2: Convert to fraction form
    68,696.64/94,762.62 = 40,012.92/x
  3. Step 3: Cross multiply
    68,696.64x = 94,762.62 × 40,012.92
  4. Step 4: Simplify right side
    68,696.64x = 3,791,729,133.05
  5. Step 5: Solve for x
    x = 3,791,729,133.05/68,696.64
  6. Step 6: Final answer
    x = 55,195.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.