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Finding the Fourth Proportional to 65,458.75, 90,325.47 and 36,774.43

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Solution

The fourth proportional to 65,458.75, 90,325.47 and 36,774.43 is: 50,744.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,458.75 : 90,325.47 = 36,774.43 : x
  2. Step 2: Convert to fraction form
    65,458.75/90,325.47 = 36,774.43/x
  3. Step 3: Cross multiply
    65,458.75x = 90,325.47 × 36,774.43
  4. Step 4: Simplify right side
    65,458.75x = 3,321,667,673.73
  5. Step 5: Solve for x
    x = 3,321,667,673.73/65,458.75
  6. Step 6: Final answer
    x = 50,744.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.