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Finding the Fourth Proportional to 66,102.63, 91,221.66 and 35,887.92

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Solution

The fourth proportional to 66,102.63, 91,221.66 and 35,887.92 is: 49,525.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,102.63 : 91,221.66 = 35,887.92 : x
  2. Step 2: Convert to fraction form
    66,102.63/91,221.66 = 35,887.92/x
  3. Step 3: Cross multiply
    66,102.63x = 91,221.66 × 35,887.92
  4. Step 4: Simplify right side
    66,102.63x = 3,273,755,636.35
  5. Step 5: Solve for x
    x = 3,273,755,636.35/66,102.63
  6. Step 6: Final answer
    x = 49,525.35

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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.