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Finding the Fourth Proportional to 75,885.72, 113,732.86 and 38,455.21

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Solution

The fourth proportional to 75,885.72, 113,732.86 and 38,455.21 is: 57,634.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,885.72 : 113,732.86 = 38,455.21 : x
  2. Step 2: Convert to fraction form
    75,885.72/113,732.86 = 38,455.21/x
  3. Step 3: Cross multiply
    75,885.72x = 113,732.86 × 38,455.21
  4. Step 4: Simplify right side
    75,885.72x = 4,373,621,015.20
  5. Step 5: Solve for x
    x = 4,373,621,015.20/75,885.72
  6. Step 6: Final answer
    x = 57,634.31

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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.