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Finding the Fourth Proportional to 77,241.39, 106,578.99 and 43,250.40

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Solution

The fourth proportional to 77,241.39, 106,578.99 and 43,250.40 is: 59,677.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,241.39 : 106,578.99 = 43,250.40 : x
  2. Step 2: Convert to fraction form
    77,241.39/106,578.99 = 43,250.40/x
  3. Step 3: Cross multiply
    77,241.39x = 106,578.99 × 43,250.40
  4. Step 4: Simplify right side
    77,241.39x = 4,609,583,949.10
  5. Step 5: Solve for x
    x = 4,609,583,949.10/77,241.39
  6. Step 6: Final answer
    x = 59,677.64

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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.