Home / 51,381.63-77,116.19-20,238.75

Finding the Fourth Proportional to 51,381.63, 77,116.19 and 20,238.75

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Solution

The fourth proportional to 51,381.63, 77,116.19 and 20,238.75 is: 30,375.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,381.63 : 77,116.19 = 20,238.75 : x
  2. Step 2: Convert to fraction form
    51,381.63/77,116.19 = 20,238.75/x
  3. Step 3: Cross multiply
    51,381.63x = 77,116.19 × 20,238.75
  4. Step 4: Simplify right side
    51,381.63x = 1,560,735,189.17
  5. Step 5: Solve for x
    x = 1,560,735,189.17/51,381.63
  6. Step 6: Final answer
    x = 30,375.35

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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.