Home / 75,112.90-103,667.19-42,847.36

Finding the Fourth Proportional to 75,112.90, 103,667.19 and 42,847.36

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Solution

The fourth proportional to 75,112.90, 103,667.19 and 42,847.36 is: 59,135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,112.90 : 103,667.19 = 42,847.36 : x
  2. Step 2: Convert to fraction form
    75,112.90/103,667.19 = 42,847.36/x
  3. Step 3: Cross multiply
    75,112.90x = 103,667.19 × 42,847.36
  4. Step 4: Simplify right side
    75,112.90x = 4,441,865,410.12
  5. Step 5: Solve for x
    x = 4,441,865,410.12/75,112.90
  6. Step 6: Final answer
    x = 59,135.85

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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.