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Finding the Fourth Proportional to 66,103.79, 99,057.21 and 36,530.07

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Solution

The fourth proportional to 66,103.79, 99,057.21 and 36,530.07 is: 54,740.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,103.79 : 99,057.21 = 36,530.07 : x
  2. Step 2: Convert to fraction form
    66,103.79/99,057.21 = 36,530.07/x
  3. Step 3: Cross multiply
    66,103.79x = 99,057.21 × 36,530.07
  4. Step 4: Simplify right side
    66,103.79x = 3,618,566,815.30
  5. Step 5: Solve for x
    x = 3,618,566,815.30/66,103.79
  6. Step 6: Final answer
    x = 54,740.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.