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Finding the Fourth Proportional to 66,502.50, 99,772.50 and 27,087.90

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Solution

The fourth proportional to 66,502.50, 99,772.50 and 27,087.90 is: 40,639.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,502.50 : 99,772.50 = 27,087.90 : x
  2. Step 2: Convert to fraction form
    66,502.50/99,772.50 = 27,087.90/x
  3. Step 3: Cross multiply
    66,502.50x = 99,772.50 × 27,087.90
  4. Step 4: Simplify right side
    66,502.50x = 2,702,627,502.75
  5. Step 5: Solve for x
    x = 2,702,627,502.75/66,502.50
  6. Step 6: Final answer
    x = 40,639.49

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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.