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Finding the Fourth Proportional to 75,760.41, 113,640.56 and 20,356.41

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Solution

The fourth proportional to 75,760.41, 113,640.56 and 20,356.41 is: 30,534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,760.41 : 113,640.56 = 20,356.41 : x
  2. Step 2: Convert to fraction form
    75,760.41/113,640.56 = 20,356.41/x
  3. Step 3: Cross multiply
    75,760.41x = 113,640.56 × 20,356.41
  4. Step 4: Simplify right side
    75,760.41x = 2,313,313,730.21
  5. Step 5: Solve for x
    x = 2,313,313,730.21/75,760.41
  6. Step 6: Final answer
    x = 30,534.60

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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.