Home / 75,128.75-103,677.63-41,137.21

Finding the Fourth Proportional to 75,128.75, 103,677.63 and 41,137.21

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Solution

The fourth proportional to 75,128.75, 103,677.63 and 41,137.21 is: 56,769.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,128.75 : 103,677.63 = 41,137.21 : x
  2. Step 2: Convert to fraction form
    75,128.75/103,677.63 = 41,137.21/x
  3. Step 3: Cross multiply
    75,128.75x = 103,677.63 × 41,137.21
  4. Step 4: Simplify right side
    75,128.75x = 4,265,008,437.61
  5. Step 5: Solve for x
    x = 4,265,008,437.61/75,128.75
  6. Step 6: Final answer
    x = 56,769.33

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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.