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Finding the Fourth Proportional to 75,745.66, 113,621.36 and 28,355.77

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Solution

The fourth proportional to 75,745.66, 113,621.36 and 28,355.77 is: 42,534.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,745.66 : 113,621.36 = 28,355.77 : x
  2. Step 2: Convert to fraction form
    75,745.66/113,621.36 = 28,355.77/x
  3. Step 3: Cross multiply
    75,745.66x = 113,621.36 × 28,355.77
  4. Step 4: Simplify right side
    75,745.66x = 3,221,821,231.25
  5. Step 5: Solve for x
    x = 3,221,821,231.25/75,745.66
  6. Step 6: Final answer
    x = 42,534.73

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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.