Home / 70,812.18-106,193.52-20,879.02

Finding the Fourth Proportional to 70,812.18, 106,193.52 and 20,879.02

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Solution

The fourth proportional to 70,812.18, 106,193.52 and 20,879.02 is: 31,311.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,812.18 : 106,193.52 = 20,879.02 : x
  2. Step 2: Convert to fraction form
    70,812.18/106,193.52 = 20,879.02/x
  3. Step 3: Cross multiply
    70,812.18x = 106,193.52 × 20,879.02
  4. Step 4: Simplify right side
    70,812.18x = 2,217,216,627.95
  5. Step 5: Solve for x
    x = 2,217,216,627.95/70,812.18
  6. Step 6: Final answer
    x = 31,311.23

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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.