Home / 75,689.75-104,451.86-42,155.75

Finding the Fourth Proportional to 75,689.75, 104,451.86 and 42,155.75

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Solution

The fourth proportional to 75,689.75, 104,451.86 and 42,155.75 is: 58,174.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,689.75 : 104,451.86 = 42,155.75 : x
  2. Step 2: Convert to fraction form
    75,689.75/104,451.86 = 42,155.75/x
  3. Step 3: Cross multiply
    75,689.75x = 104,451.86 × 42,155.75
  4. Step 4: Simplify right side
    75,689.75x = 4,403,246,497.20
  5. Step 5: Solve for x
    x = 4,403,246,497.20/75,689.75
  6. Step 6: Final answer
    x = 58,174.94

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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.