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Finding the Fourth Proportional to 75,419.91, 104,076.11 and 45,221.90

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Solution

The fourth proportional to 75,419.91, 104,076.11 and 45,221.90 is: 62,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,419.91 : 104,076.11 = 45,221.90 : x
  2. Step 2: Convert to fraction form
    75,419.91/104,076.11 = 45,221.90/x
  3. Step 3: Cross multiply
    75,419.91x = 104,076.11 × 45,221.90
  4. Step 4: Simplify right side
    75,419.91x = 4,706,519,031.48
  5. Step 5: Solve for x
    x = 4,706,519,031.48/75,419.91
  6. Step 6: Final answer
    x = 62,404.20

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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.