Home / 75,284.21-112,949.70-45,331.42

Finding the Fourth Proportional to 75,284.21, 112,949.70 and 45,331.42

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Solution

The fourth proportional to 75,284.21, 112,949.70 and 45,331.42 is: 68,011.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,284.21 : 112,949.70 = 45,331.42 : x
  2. Step 2: Convert to fraction form
    75,284.21/112,949.70 = 45,331.42/x
  3. Step 3: Cross multiply
    75,284.21x = 112,949.70 × 45,331.42
  4. Step 4: Simplify right side
    75,284.21x = 5,120,170,289.57
  5. Step 5: Solve for x
    x = 5,120,170,289.57/75,284.21
  6. Step 6: Final answer
    x = 68,011.21

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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.