Home / 75,378.11-112,919.38-43,721.67

Finding the Fourth Proportional to 75,378.11, 112,919.38 and 43,721.67

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Solution

The fourth proportional to 75,378.11, 112,919.38 and 43,721.67 is: 65,496.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,378.11 : 112,919.38 = 43,721.67 : x
  2. Step 2: Convert to fraction form
    75,378.11/112,919.38 = 43,721.67/x
  3. Step 3: Cross multiply
    75,378.11x = 112,919.38 × 43,721.67
  4. Step 4: Simplify right side
    75,378.11x = 4,937,023,304.37
  5. Step 5: Solve for x
    x = 4,937,023,304.37/75,378.11
  6. Step 6: Final answer
    x = 65,496.78

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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.