Home / 65,938.87-98,905.20-21,559.78

Finding the Fourth Proportional to 65,938.87, 98,905.20 and 21,559.78

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Solution

The fourth proportional to 65,938.87, 98,905.20 and 21,559.78 is: 32,338.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,938.87 : 98,905.20 = 21,559.78 : x
  2. Step 2: Convert to fraction form
    65,938.87/98,905.20 = 21,559.78/x
  3. Step 3: Cross multiply
    65,938.87x = 98,905.20 × 21,559.78
  4. Step 4: Simplify right side
    65,938.87x = 2,132,374,352.86
  5. Step 5: Solve for x
    x = 2,132,374,352.86/65,938.87
  6. Step 6: Final answer
    x = 32,338.65

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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.