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Finding the Fourth Proportional to 66,909.83, 100,277.26 and 27,420.71

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Solution

The fourth proportional to 66,909.83, 100,277.26 and 27,420.71 is: 41,095.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,909.83 : 100,277.26 = 27,420.71 : x
  2. Step 2: Convert to fraction form
    66,909.83/100,277.26 = 27,420.71/x
  3. Step 3: Cross multiply
    66,909.83x = 100,277.26 × 27,420.71
  4. Step 4: Simplify right side
    66,909.83x = 2,749,673,528.95
  5. Step 5: Solve for x
    x = 2,749,673,528.95/66,909.83
  6. Step 6: Final answer
    x = 41,095.21

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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.