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Finding the Fourth Proportional to 65,484.75, 90,379.83 and 38,633.86

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Solution

The fourth proportional to 65,484.75, 90,379.83 and 38,633.86 is: 53,321.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,484.75 : 90,379.83 = 38,633.86 : x
  2. Step 2: Convert to fraction form
    65,484.75/90,379.83 = 38,633.86/x
  3. Step 3: Cross multiply
    65,484.75x = 90,379.83 × 38,633.86
  4. Step 4: Simplify right side
    65,484.75x = 3,491,721,699.04
  5. Step 5: Solve for x
    x = 3,491,721,699.04/65,484.75
  6. Step 6: Final answer
    x = 53,321.14

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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.