Home / 76,412.33-114,623.55-20,251.65

Finding the Fourth Proportional to 76,412.33, 114,623.55 and 20,251.65

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Solution

The fourth proportional to 76,412.33, 114,623.55 and 20,251.65 is: 30,378.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,412.33 : 114,623.55 = 20,251.65 : x
  2. Step 2: Convert to fraction form
    76,412.33/114,623.55 = 20,251.65/x
  3. Step 3: Cross multiply
    76,412.33x = 114,623.55 × 20,251.65
  4. Step 4: Simplify right side
    76,412.33x = 2,321,316,016.36
  5. Step 5: Solve for x
    x = 2,321,316,016.36/76,412.33
  6. Step 6: Final answer
    x = 30,378.82

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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.