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Finding the Fourth Proportional to 75,788.20, 113,463.60 and 67,040.20

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Solution

The fourth proportional to 75,788.20, 113,463.60 and 67,040.20 is: 100,366.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,788.20 : 113,463.60 = 67,040.20 : x
  2. Step 2: Convert to fraction form
    75,788.20/113,463.60 = 67,040.20/x
  3. Step 3: Cross multiply
    75,788.20x = 113,463.60 × 67,040.20
  4. Step 4: Simplify right side
    75,788.20x = 7,606,622,436.72
  5. Step 5: Solve for x
    x = 7,606,622,436.72/75,788.20
  6. Step 6: Final answer
    x = 100,366.84

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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.