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Finding the Fourth Proportional to 66,638.41, 91,952.13 and 42,797.38

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Solution

The fourth proportional to 66,638.41, 91,952.13 and 42,797.38 is: 59,054.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,638.41 : 91,952.13 = 42,797.38 : x
  2. Step 2: Convert to fraction form
    66,638.41/91,952.13 = 42,797.38/x
  3. Step 3: Cross multiply
    66,638.41x = 91,952.13 × 42,797.38
  4. Step 4: Simplify right side
    66,638.41x = 3,935,310,249.42
  5. Step 5: Solve for x
    x = 3,935,310,249.42/66,638.41
  6. Step 6: Final answer
    x = 59,054.68

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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.