Home / 51,690.24-77,487.60-20,121.12

Finding the Fourth Proportional to 51,690.24, 77,487.60 and 20,121.12

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Solution

The fourth proportional to 51,690.24, 77,487.60 and 20,121.12 is: 30,163.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,690.24 : 77,487.60 = 20,121.12 : x
  2. Step 2: Convert to fraction form
    51,690.24/77,487.60 = 20,121.12/x
  3. Step 3: Cross multiply
    51,690.24x = 77,487.60 × 20,121.12
  4. Step 4: Simplify right side
    51,690.24x = 1,559,137,298.11
  5. Step 5: Solve for x
    x = 1,559,137,298.11/51,690.24
  6. Step 6: Final answer
    x = 30,163.09

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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.