Home / 77,282.18-106,884.20-69,321.50

Finding the Fourth Proportional to 77,282.18, 106,884.20 and 69,321.50

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Solution

The fourth proportional to 77,282.18, 106,884.20 and 69,321.50 is: 95,874.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,282.18 : 106,884.20 = 69,321.50 : x
  2. Step 2: Convert to fraction form
    77,282.18/106,884.20 = 69,321.50/x
  3. Step 3: Cross multiply
    77,282.18x = 106,884.20 × 69,321.50
  4. Step 4: Simplify right side
    77,282.18x = 7,409,372,723.69
  5. Step 5: Solve for x
    x = 7,409,372,723.69/77,282.18
  6. Step 6: Final answer
    x = 95,874.27

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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.