Home / 77,433.68-116,221.80-47,909.20

Finding the Fourth Proportional to 77,433.68, 116,221.80 and 47,909.20

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Solution

The fourth proportional to 77,433.68, 116,221.80 and 47,909.20 is: 71,907.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,433.68 : 116,221.80 = 47,909.20 : x
  2. Step 2: Convert to fraction form
    77,433.68/116,221.80 = 47,909.20/x
  3. Step 3: Cross multiply
    77,433.68x = 116,221.80 × 47,909.20
  4. Step 4: Simplify right side
    77,433.68x = 5,568,093,460.56
  5. Step 5: Solve for x
    x = 5,568,093,460.56/77,433.68
  6. Step 6: Final answer
    x = 71,907.90

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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.