Home / 75,780.72-104,578.02-41,790.42

Finding the Fourth Proportional to 75,780.72, 104,578.02 and 41,790.42

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Solution

The fourth proportional to 75,780.72, 104,578.02 and 41,790.42 is: 57,671.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,780.72 : 104,578.02 = 41,790.42 : x
  2. Step 2: Convert to fraction form
    75,780.72/104,578.02 = 41,790.42/x
  3. Step 3: Cross multiply
    75,780.72x = 104,578.02 × 41,790.42
  4. Step 4: Simplify right side
    75,780.72x = 4,370,359,378.57
  5. Step 5: Solve for x
    x = 4,370,359,378.57/75,780.72
  6. Step 6: Final answer
    x = 57,671.13

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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.