Home / 80,742.18-111,308.72-56,794.53

Finding the Fourth Proportional to 80,742.18, 111,308.72 and 56,794.53

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Solution

The fourth proportional to 80,742.18, 111,308.72 and 56,794.53 is: 78,295.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,742.18 : 111,308.72 = 56,794.53 : x
  2. Step 2: Convert to fraction form
    80,742.18/111,308.72 = 56,794.53/x
  3. Step 3: Cross multiply
    80,742.18x = 111,308.72 × 56,794.53
  4. Step 4: Simplify right side
    80,742.18x = 6,321,726,153.33
  5. Step 5: Solve for x
    x = 6,321,726,153.33/80,742.18
  6. Step 6: Final answer
    x = 78,295.21

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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.