Home / 70,761.18-106,142.85-18,169.50

Finding the Fourth Proportional to 70,761.18, 106,142.85 and 18,169.50

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Solution

The fourth proportional to 70,761.18, 106,142.85 and 18,169.50 is: 27,254.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,761.18 : 106,142.85 = 18,169.50 : x
  2. Step 2: Convert to fraction form
    70,761.18/106,142.85 = 18,169.50/x
  3. Step 3: Cross multiply
    70,761.18x = 106,142.85 × 18,169.50
  4. Step 4: Simplify right side
    70,761.18x = 1,928,562,513.08
  5. Step 5: Solve for x
    x = 1,928,562,513.08/70,761.18
  6. Step 6: Final answer
    x = 27,254.53

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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.