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Finding the Fourth Proportional to 66,351.96, 91,577.52 and 39,510

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Solution

The fourth proportional to 66,351.96, 91,577.52 and 39,510 is: 54,530.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,351.96 : 91,577.52 = 39,510 : x
  2. Step 2: Convert to fraction form
    66,351.96/91,577.52 = 39,510/x
  3. Step 3: Cross multiply
    66,351.96x = 91,577.52 × 39,510
  4. Step 4: Simplify right side
    66,351.96x = 3,618,227,815.20
  5. Step 5: Solve for x
    x = 3,618,227,815.20/66,351.96
  6. Step 6: Final answer
    x = 54,530.84

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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.