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Finding the Fourth Proportional to 66,351.91, 91,564.26 and 36,137.76

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Solution

The fourth proportional to 66,351.91, 91,564.26 and 36,137.76 is: 49,869.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,351.91 : 91,564.26 = 36,137.76 : x
  2. Step 2: Convert to fraction form
    66,351.91/91,564.26 = 36,137.76/x
  3. Step 3: Cross multiply
    66,351.91x = 91,564.26 × 36,137.76
  4. Step 4: Simplify right side
    66,351.91x = 3,308,927,252.46
  5. Step 5: Solve for x
    x = 3,308,927,252.46/66,351.91
  6. Step 6: Final answer
    x = 49,869.36

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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.