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Finding the Fourth Proportional to 66,656.33, 91,984.69 and 36,440.94

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Solution

The fourth proportional to 66,656.33, 91,984.69 and 36,440.94 is: 50,287.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,656.33 : 91,984.69 = 36,440.94 : x
  2. Step 2: Convert to fraction form
    66,656.33/91,984.69 = 36,440.94/x
  3. Step 3: Cross multiply
    66,656.33x = 91,984.69 × 36,440.94
  4. Step 4: Simplify right side
    66,656.33x = 3,352,008,569.21
  5. Step 5: Solve for x
    x = 3,352,008,569.21/66,656.33
  6. Step 6: Final answer
    x = 50,287.93

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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.