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Finding the Fourth Proportional to 66,641.44, 91,956.30 and 42,800.38

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Solution

The fourth proportional to 66,641.44, 91,956.30 and 42,800.38 is: 59,058.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,641.44 : 91,956.30 = 42,800.38 : x
  2. Step 2: Convert to fraction form
    66,641.44/91,956.30 = 42,800.38/x
  3. Step 3: Cross multiply
    66,641.44x = 91,956.30 × 42,800.38
  4. Step 4: Simplify right side
    66,641.44x = 3,935,764,583.39
  5. Step 5: Solve for x
    x = 3,935,764,583.39/66,641.44
  6. Step 6: Final answer
    x = 59,058.82

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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.