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Finding the Fourth Proportional to 71,131.80, 98,164.73 and 40,917.11

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Solution

The fourth proportional to 71,131.80, 98,164.73 and 40,917.11 is: 56,467.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,131.80 : 98,164.73 = 40,917.11 : x
  2. Step 2: Convert to fraction form
    71,131.80/98,164.73 = 40,917.11/x
  3. Step 3: Cross multiply
    71,131.80x = 98,164.73 × 40,917.11
  4. Step 4: Simplify right side
    71,131.80x = 4,016,617,055.53
  5. Step 5: Solve for x
    x = 4,016,617,055.53/71,131.80
  6. Step 6: Final answer
    x = 56,467.25

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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.