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Finding the Fourth Proportional to 66,393.10, 91,620.75 and 36,179.02

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Solution

The fourth proportional to 66,393.10, 91,620.75 and 36,179.02 is: 49,926.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,393.10 : 91,620.75 = 36,179.02 : x
  2. Step 2: Convert to fraction form
    66,393.10/91,620.75 = 36,179.02/x
  3. Step 3: Cross multiply
    66,393.10x = 91,620.75 × 36,179.02
  4. Step 4: Simplify right side
    66,393.10x = 3,314,748,946.67
  5. Step 5: Solve for x
    x = 3,314,748,946.67/66,393.10
  6. Step 6: Final answer
    x = 49,926.11

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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.