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Finding the Fourth Proportional to 75,118.82, 103,664.01 and 41,129.51

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Solution

The fourth proportional to 75,118.82, 103,664.01 and 41,129.51 is: 56,758.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,118.82 : 103,664.01 = 41,129.51 : x
  2. Step 2: Convert to fraction form
    75,118.82/103,664.01 = 41,129.51/x
  3. Step 3: Cross multiply
    75,118.82x = 103,664.01 × 41,129.51
  4. Step 4: Simplify right side
    75,118.82x = 4,263,649,935.94
  5. Step 5: Solve for x
    x = 4,263,649,935.94/75,118.82
  6. Step 6: Final answer
    x = 56,758.74

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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.