Home / 51,393.96-77,120.10-20,251.08

Finding the Fourth Proportional to 51,393.96, 77,120.10 and 20,251.08

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Solution

The fourth proportional to 51,393.96, 77,120.10 and 20,251.08 is: 30,388.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,393.96 : 77,120.10 = 20,251.08 : x
  2. Step 2: Convert to fraction form
    51,393.96/77,120.10 = 20,251.08/x
  3. Step 3: Cross multiply
    51,393.96x = 77,120.10 × 20,251.08
  4. Step 4: Simplify right side
    51,393.96x = 1,561,765,314.71
  5. Step 5: Solve for x
    x = 1,561,765,314.71/51,393.96
  6. Step 6: Final answer
    x = 30,388.11

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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.