Home / 80,623.44-111,221.64-69,426

Finding the Fourth Proportional to 80,623.44, 111,221.64 and 69,426

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Solution

The fourth proportional to 80,623.44, 111,221.64 and 69,426 is: 95,774.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,623.44 : 111,221.64 = 69,426 : x
  2. Step 2: Convert to fraction form
    80,623.44/111,221.64 = 69,426/x
  3. Step 3: Cross multiply
    80,623.44x = 111,221.64 × 69,426
  4. Step 4: Simplify right side
    80,623.44x = 7,721,673,578.64
  5. Step 5: Solve for x
    x = 7,721,673,578.64/80,623.44
  6. Step 6: Final answer
    x = 95,774.55

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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.