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Finding the Fourth Proportional to 68,602.82, 94,660.47 and 40,313.97

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Solution

The fourth proportional to 68,602.82, 94,660.47 and 40,313.97 is: 55,626.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,602.82 : 94,660.47 = 40,313.97 : x
  2. Step 2: Convert to fraction form
    68,602.82/94,660.47 = 40,313.97/x
  3. Step 3: Cross multiply
    68,602.82x = 94,660.47 × 40,313.97
  4. Step 4: Simplify right side
    68,602.82x = 3,816,139,347.77
  5. Step 5: Solve for x
    x = 3,816,139,347.77/68,602.82
  6. Step 6: Final answer
    x = 55,626.57

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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.