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Finding the Fourth Proportional to 75,447.36, 113,203.80 and 28,713.60

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Solution

The fourth proportional to 75,447.36, 113,203.80 and 28,713.60 is: 43,082.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,447.36 : 113,203.80 = 28,713.60 : x
  2. Step 2: Convert to fraction form
    75,447.36/113,203.80 = 28,713.60/x
  3. Step 3: Cross multiply
    75,447.36x = 113,203.80 × 28,713.60
  4. Step 4: Simplify right side
    75,447.36x = 3,250,488,631.68
  5. Step 5: Solve for x
    x = 3,250,488,631.68/75,447.36
  6. Step 6: Final answer
    x = 43,082.87

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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.