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Finding the Fourth Proportional to 65,757.34, 98,660.84 and 39,480.40

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Solution

The fourth proportional to 65,757.34, 98,660.84 and 39,480.40 is: 59,235.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,757.34 : 98,660.84 = 39,480.40 : x
  2. Step 2: Convert to fraction form
    65,757.34/98,660.84 = 39,480.40/x
  3. Step 3: Cross multiply
    65,757.34x = 98,660.84 × 39,480.40
  4. Step 4: Simplify right side
    65,757.34x = 3,895,169,427.54
  5. Step 5: Solve for x
    x = 3,895,169,427.54/65,757.34
  6. Step 6: Final answer
    x = 59,235.51

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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.