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Finding the Fourth Proportional to 71,734.87, 98,994.04 and 39,903.09

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Solution

The fourth proportional to 71,734.87, 98,994.04 and 39,903.09 is: 55,066.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,734.87 : 98,994.04 = 39,903.09 : x
  2. Step 2: Convert to fraction form
    71,734.87/98,994.04 = 39,903.09/x
  3. Step 3: Cross multiply
    71,734.87x = 98,994.04 × 39,903.09
  4. Step 4: Simplify right side
    71,734.87x = 3,950,168,087.58
  5. Step 5: Solve for x
    x = 3,950,168,087.58/71,734.87
  6. Step 6: Final answer
    x = 55,066.22

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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.