Home / 91,030.15-125,675.42-80,930.64

Finding the Fourth Proportional to 91,030.15, 125,675.42 and 80,930.64

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Solution

The fourth proportional to 91,030.15, 125,675.42 and 80,930.64 is: 111,732.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,030.15 : 125,675.42 = 80,930.64 : x
  2. Step 2: Convert to fraction form
    91,030.15/125,675.42 = 80,930.64/x
  3. Step 3: Cross multiply
    91,030.15x = 125,675.42 × 80,930.64
  4. Step 4: Simplify right side
    91,030.15x = 10,170,992,375.20
  5. Step 5: Solve for x
    x = 10,170,992,375.20/91,030.15
  6. Step 6: Final answer
    x = 111,732.13

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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.