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Finding the Fourth Proportional to 75,809.88, 113,622.57 and 53,629.65

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Solution

The fourth proportional to 75,809.88, 113,622.57 and 53,629.65 is: 80,379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,809.88 : 113,622.57 = 53,629.65 : x
  2. Step 2: Convert to fraction form
    75,809.88/113,622.57 = 53,629.65/x
  3. Step 3: Cross multiply
    75,809.88x = 113,622.57 × 53,629.65
  4. Step 4: Simplify right side
    75,809.88x = 6,093,538,661.20
  5. Step 5: Solve for x
    x = 6,093,538,661.20/75,809.88
  6. Step 6: Final answer
    x = 80,379.22

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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.