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Finding the Fourth Proportional to 66,071.71, 91,179.63 and 35,857.30

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Solution

The fourth proportional to 66,071.71, 91,179.63 and 35,857.30 is: 49,483.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,071.71 : 91,179.63 = 35,857.30 : x
  2. Step 2: Convert to fraction form
    66,071.71/91,179.63 = 35,857.30/x
  3. Step 3: Cross multiply
    66,071.71x = 91,179.63 × 35,857.30
  4. Step 4: Simplify right side
    66,071.71x = 3,269,454,890.90
  5. Step 5: Solve for x
    x = 3,269,454,890.90/66,071.71
  6. Step 6: Final answer
    x = 49,483.43

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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.