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Finding the Fourth Proportional to 66,123.96, 91,251.81 and 35,909.61

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Solution

The fourth proportional to 66,123.96, 91,251.81 and 35,909.61 is: 49,555.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,123.96 : 91,251.81 = 35,909.61 : x
  2. Step 2: Convert to fraction form
    66,123.96/91,251.81 = 35,909.61/x
  3. Step 3: Cross multiply
    66,123.96x = 91,251.81 × 35,909.61
  4. Step 4: Simplify right side
    66,123.96x = 3,276,816,908.89
  5. Step 5: Solve for x
    x = 3,276,816,908.89/66,123.96
  6. Step 6: Final answer
    x = 49,555.67

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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.