Home / 75,131.88-103,677.42-41,140.78

Finding the Fourth Proportional to 75,131.88, 103,677.42 and 41,140.78

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Solution

The fourth proportional to 75,131.88, 103,677.42 and 41,140.78 is: 56,771.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,131.88 : 103,677.42 = 41,140.78 : x
  2. Step 2: Convert to fraction form
    75,131.88/103,677.42 = 41,140.78/x
  3. Step 3: Cross multiply
    75,131.88x = 103,677.42 × 41,140.78
  4. Step 4: Simplify right side
    75,131.88x = 4,265,369,927.19
  5. Step 5: Solve for x
    x = 4,265,369,927.19/75,131.88
  6. Step 6: Final answer
    x = 56,771.77

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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.