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Finding the Fourth Proportional to 75,380.60, 104,026.53 and 41,390.53

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Solution

The fourth proportional to 75,380.60, 104,026.53 and 41,390.53 is: 57,119.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,380.60 : 104,026.53 = 41,390.53 : x
  2. Step 2: Convert to fraction form
    75,380.60/104,026.53 = 41,390.53/x
  3. Step 3: Cross multiply
    75,380.60x = 104,026.53 × 41,390.53
  4. Step 4: Simplify right side
    75,380.60x = 4,305,712,950.69
  5. Step 5: Solve for x
    x = 4,305,712,950.69/75,380.60
  6. Step 6: Final answer
    x = 57,119.64

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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.