Home / 76,020.28-113,982.12-66,679.07

Finding the Fourth Proportional to 76,020.28, 113,982.12 and 66,679.07

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Solution

The fourth proportional to 76,020.28, 113,982.12 and 66,679.07 is: 99,976.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,020.28 : 113,982.12 = 66,679.07 : x
  2. Step 2: Convert to fraction form
    76,020.28/113,982.12 = 66,679.07/x
  3. Step 3: Cross multiply
    76,020.28x = 113,982.12 × 66,679.07
  4. Step 4: Simplify right side
    76,020.28x = 7,600,221,188.32
  5. Step 5: Solve for x
    x = 7,600,221,188.32/76,020.28
  6. Step 6: Final answer
    x = 99,976.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.