Home / 91,452.42-126,215.91-55,640.28

Finding the Fourth Proportional to 91,452.42, 126,215.91 and 55,640.28

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Solution

The fourth proportional to 91,452.42, 126,215.91 and 55,640.28 is: 76,790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,452.42 : 126,215.91 = 55,640.28 : x
  2. Step 2: Convert to fraction form
    91,452.42/126,215.91 = 55,640.28/x
  3. Step 3: Cross multiply
    91,452.42x = 126,215.91 × 55,640.28
  4. Step 4: Simplify right side
    91,452.42x = 7,022,688,572.85
  5. Step 5: Solve for x
    x = 7,022,688,572.85/91,452.42
  6. Step 6: Final answer
    x = 76,790.63

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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.