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Finding the Fourth Proportional to 66,088, 91,202.88 and 36,280

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Solution

The fourth proportional to 66,088, 91,202.88 and 36,280 is: 50,067.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,088 : 91,202.88 = 36,280 : x
  2. Step 2: Convert to fraction form
    66,088/91,202.88 = 36,280/x
  3. Step 3: Cross multiply
    66,088x = 91,202.88 × 36,280
  4. Step 4: Simplify right side
    66,088x = 3,308,840,486.40
  5. Step 5: Solve for x
    x = 3,308,840,486.40/66,088
  6. Step 6: Final answer
    x = 50,067.19

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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.