Home / 51,900.74-77,839.16-20,311.55

Finding the Fourth Proportional to 51,900.74, 77,839.16 and 20,311.55

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Solution

The fourth proportional to 51,900.74, 77,839.16 and 20,311.55 is: 30,462.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,900.74 : 77,839.16 = 20,311.55 : x
  2. Step 2: Convert to fraction form
    51,900.74/77,839.16 = 20,311.55/x
  3. Step 3: Cross multiply
    51,900.74x = 77,839.16 × 20,311.55
  4. Step 4: Simplify right side
    51,900.74x = 1,581,033,990.30
  5. Step 5: Solve for x
    x = 1,581,033,990.30/51,900.74
  6. Step 6: Final answer
    x = 30,462.65

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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.