Home / 80,962.07-111,747.69-55,163.30

Finding the Fourth Proportional to 80,962.07, 111,747.69 and 55,163.30

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Solution

The fourth proportional to 80,962.07, 111,747.69 and 55,163.30 is: 76,139.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,962.07 : 111,747.69 = 55,163.30 : x
  2. Step 2: Convert to fraction form
    80,962.07/111,747.69 = 55,163.30/x
  3. Step 3: Cross multiply
    80,962.07x = 111,747.69 × 55,163.30
  4. Step 4: Simplify right side
    80,962.07x = 6,164,370,944.19
  5. Step 5: Solve for x
    x = 6,164,370,944.19/80,962.07
  6. Step 6: Final answer
    x = 76,139.00

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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.