Home / 51,287.24-76,886.70-20,115.08

Finding the Fourth Proportional to 51,287.24, 76,886.70 and 20,115.08

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Solution

The fourth proportional to 51,287.24, 76,886.70 and 20,115.08 is: 30,155.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,287.24 : 76,886.70 = 20,115.08 : x
  2. Step 2: Convert to fraction form
    51,287.24/76,886.70 = 20,115.08/x
  3. Step 3: Cross multiply
    51,287.24x = 76,886.70 × 20,115.08
  4. Step 4: Simplify right side
    51,287.24x = 1,546,582,121.44
  5. Step 5: Solve for x
    x = 1,546,582,121.44/51,287.24
  6. Step 6: Final answer
    x = 30,155.30

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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.