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Finding the Fourth Proportional to 75,467.48, 104,145.74 and 47,189.56

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Solution

The fourth proportional to 75,467.48, 104,145.74 and 47,189.56 is: 65,121.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,467.48 : 104,145.74 = 47,189.56 : x
  2. Step 2: Convert to fraction form
    75,467.48/104,145.74 = 47,189.56/x
  3. Step 3: Cross multiply
    75,467.48x = 104,145.74 × 47,189.56
  4. Step 4: Simplify right side
    75,467.48x = 4,914,591,646.47
  5. Step 5: Solve for x
    x = 4,914,591,646.47/75,467.48
  6. Step 6: Final answer
    x = 65,121.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.