Home / 75,761.12-113,641.64-20,357.12

Finding the Fourth Proportional to 75,761.12, 113,641.64 and 20,357.12

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Solution

The fourth proportional to 75,761.12, 113,641.64 and 20,357.12 is: 30,535.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,761.12 : 113,641.64 = 20,357.12 : x
  2. Step 2: Convert to fraction form
    75,761.12/113,641.64 = 20,357.12/x
  3. Step 3: Cross multiply
    75,761.12x = 113,641.64 × 20,357.12
  4. Step 4: Simplify right side
    75,761.12x = 2,313,416,502.48
  5. Step 5: Solve for x
    x = 2,313,416,502.48/75,761.12
  6. Step 6: Final answer
    x = 30,535.67

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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.