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Finding the Fourth Proportional to 75,043.56, 112,509.44 and 45,454.26

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Solution

The fourth proportional to 75,043.56, 112,509.44 and 45,454.26 is: 68,147.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,043.56 : 112,509.44 = 45,454.26 : x
  2. Step 2: Convert to fraction form
    75,043.56/112,509.44 = 45,454.26/x
  3. Step 3: Cross multiply
    75,043.56x = 112,509.44 × 45,454.26
  4. Step 4: Simplify right side
    75,043.56x = 5,114,033,338.21
  5. Step 5: Solve for x
    x = 5,114,033,338.21/75,043.56
  6. Step 6: Final answer
    x = 68,147.53

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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.