Home / 75,139.58-112,755.17-39,119.69

Finding the Fourth Proportional to 75,139.58, 112,755.17 and 39,119.69

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Solution

The fourth proportional to 75,139.58, 112,755.17 and 39,119.69 is: 58,703.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,139.58 : 112,755.17 = 39,119.69 : x
  2. Step 2: Convert to fraction form
    75,139.58/112,755.17 = 39,119.69/x
  3. Step 3: Cross multiply
    75,139.58x = 112,755.17 × 39,119.69
  4. Step 4: Simplify right side
    75,139.58x = 4,410,947,675.98
  5. Step 5: Solve for x
    x = 4,410,947,675.98/75,139.58
  6. Step 6: Final answer
    x = 58,703.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.