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Finding the Fourth Proportional to 75,635.40, 113,419.62 and 28,855.56

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Solution

The fourth proportional to 75,635.40, 113,419.62 and 28,855.56 is: 43,270.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,635.40 : 113,419.62 = 28,855.56 : x
  2. Step 2: Convert to fraction form
    75,635.40/113,419.62 = 28,855.56/x
  3. Step 3: Cross multiply
    75,635.40x = 113,419.62 × 28,855.56
  4. Step 4: Simplify right side
    75,635.40x = 3,272,786,650.09
  5. Step 5: Solve for x
    x = 3,272,786,650.09/75,635.40
  6. Step 6: Final answer
    x = 43,270.57

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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.