Home / 80,609.49-111,225.33-55,087.20

Finding the Fourth Proportional to 80,609.49, 111,225.33 and 55,087.20

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Solution

The fourth proportional to 80,609.49, 111,225.33 and 55,087.20 is: 76,009.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,609.49 : 111,225.33 = 55,087.20 : x
  2. Step 2: Convert to fraction form
    80,609.49/111,225.33 = 55,087.20/x
  3. Step 3: Cross multiply
    80,609.49x = 111,225.33 × 55,087.20
  4. Step 4: Simplify right side
    80,609.49x = 6,127,091,998.78
  5. Step 5: Solve for x
    x = 6,127,091,998.78/80,609.49
  6. Step 6: Final answer
    x = 76,009.56

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1.5x scale

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.