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Finding the Fourth Proportional to 66,663.05, 91,995.06 and 36,447.89

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Solution

The fourth proportional to 66,663.05, 91,995.06 and 36,447.89 is: 50,298.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,663.05 : 91,995.06 = 36,447.89 : x
  2. Step 2: Convert to fraction form
    66,663.05/91,995.06 = 36,447.89/x
  3. Step 3: Cross multiply
    66,663.05x = 91,995.06 × 36,447.89
  4. Step 4: Simplify right side
    66,663.05x = 3,353,025,367.45
  5. Step 5: Solve for x
    x = 3,353,025,367.45/66,663.05
  6. Step 6: Final answer
    x = 50,298.11

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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.