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Finding the Fourth Proportional to 66,564.66, 91,860.78 and 36,350.19

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Solution

The fourth proportional to 66,564.66, 91,860.78 and 36,350.19 is: 50,164.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,564.66 : 91,860.78 = 36,350.19 : x
  2. Step 2: Convert to fraction form
    66,564.66/91,860.78 = 36,350.19/x
  3. Step 3: Cross multiply
    66,564.66x = 91,860.78 × 36,350.19
  4. Step 4: Simplify right side
    66,564.66x = 3,339,156,806.55
  5. Step 5: Solve for x
    x = 3,339,156,806.55/66,564.66
  6. Step 6: Final answer
    x = 50,164.11

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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.