Home / 75,131.79-103,684.35-41,141.72

Finding the Fourth Proportional to 75,131.79, 103,684.35 and 41,141.72

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Solution

The fourth proportional to 75,131.79, 103,684.35 and 41,141.72 is: 56,776.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,131.79 : 103,684.35 = 41,141.72 : x
  2. Step 2: Convert to fraction form
    75,131.79/103,684.35 = 41,141.72/x
  3. Step 3: Cross multiply
    75,131.79x = 103,684.35 × 41,141.72
  4. Step 4: Simplify right side
    75,131.79x = 4,265,751,977.66
  5. Step 5: Solve for x
    x = 4,265,751,977.66/75,131.79
  6. Step 6: Final answer
    x = 56,776.92

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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.