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Finding the Fourth Proportional to 75,617.80, 113,469.90 and 28,904.20

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Solution

The fourth proportional to 75,617.80, 113,469.90 and 28,904.20 is: 43,372.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,617.80 : 113,469.90 = 28,904.20 : x
  2. Step 2: Convert to fraction form
    75,617.80/113,469.90 = 28,904.20/x
  3. Step 3: Cross multiply
    75,617.80x = 113,469.90 × 28,904.20
  4. Step 4: Simplify right side
    75,617.80x = 3,279,756,683.58
  5. Step 5: Solve for x
    x = 3,279,756,683.58/75,617.80
  6. Step 6: Final answer
    x = 43,372.81

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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.