Home / 51,800.40-77,709.18-18,511.56

Finding the Fourth Proportional to 51,800.40, 77,709.18 and 18,511.56

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Solution

The fourth proportional to 51,800.40, 77,709.18 and 18,511.56 is: 27,770.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,800.40 : 77,709.18 = 18,511.56 : x
  2. Step 2: Convert to fraction form
    51,800.40/77,709.18 = 18,511.56/x
  3. Step 3: Cross multiply
    51,800.40x = 77,709.18 × 18,511.56
  4. Step 4: Simplify right side
    51,800.40x = 1,438,518,148.12
  5. Step 5: Solve for x
    x = 1,438,518,148.12/51,800.40
  6. Step 6: Final answer
    x = 27,770.41

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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.