Home / 80,570.49-111,190.41-55,130.19

Finding the Fourth Proportional to 80,570.49, 111,190.41 and 55,130.19

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Solution

The fourth proportional to 80,570.49, 111,190.41 and 55,130.19 is: 76,081.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,570.49 : 111,190.41 = 55,130.19 : x
  2. Step 2: Convert to fraction form
    80,570.49/111,190.41 = 55,130.19/x
  3. Step 3: Cross multiply
    80,570.49x = 111,190.41 × 55,130.19
  4. Step 4: Simplify right side
    80,570.49x = 6,129,948,429.48
  5. Step 5: Solve for x
    x = 6,129,948,429.48/80,570.49
  6. Step 6: Final answer
    x = 76,081.81

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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.