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Finding the Fourth Proportional to 65,584.48, 90,503.90 and 38,735.68

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Solution

The fourth proportional to 65,584.48, 90,503.90 and 38,735.68 is: 53,453.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,584.48 : 90,503.90 = 38,735.68 : x
  2. Step 2: Convert to fraction form
    65,584.48/90,503.90 = 38,735.68/x
  3. Step 3: Cross multiply
    65,584.48x = 90,503.90 × 38,735.68
  4. Step 4: Simplify right side
    65,584.48x = 3,505,729,656.63
  5. Step 5: Solve for x
    x = 3,505,729,656.63/65,584.48
  6. Step 6: Final answer
    x = 53,453.65

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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.