Home / 80,865.80-111,564.40-80,741.32

Finding the Fourth Proportional to 80,865.80, 111,564.40 and 80,741.32

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Solution

The fourth proportional to 80,865.80, 111,564.40 and 80,741.32 is: 111,392.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,865.80 : 111,564.40 = 80,741.32 : x
  2. Step 2: Convert to fraction form
    80,865.80/111,564.40 = 80,741.32/x
  3. Step 3: Cross multiply
    80,865.80x = 111,564.40 × 80,741.32
  4. Step 4: Simplify right side
    80,865.80x = 9,007,856,921.01
  5. Step 5: Solve for x
    x = 9,007,856,921.01/80,865.80
  6. Step 6: Final answer
    x = 111,392.66

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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.