Home / 75,763.12-113,644.64-20,359.12

Finding the Fourth Proportional to 75,763.12, 113,644.64 and 20,359.12

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Solution

The fourth proportional to 75,763.12, 113,644.64 and 20,359.12 is: 30,538.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,763.12 : 113,644.64 = 20,359.12 : x
  2. Step 2: Convert to fraction form
    75,763.12/113,644.64 = 20,359.12/x
  3. Step 3: Cross multiply
    75,763.12x = 113,644.64 × 20,359.12
  4. Step 4: Simplify right side
    75,763.12x = 2,313,704,863.12
  5. Step 5: Solve for x
    x = 2,313,704,863.12/75,763.12
  6. Step 6: Final answer
    x = 30,538.67

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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.