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Finding the Fourth Proportional to 65,938.56, 98,907.60 and 36,340.80

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Solution

The fourth proportional to 65,938.56, 98,907.60 and 36,340.80 is: 54,511.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,938.56 : 98,907.60 = 36,340.80 : x
  2. Step 2: Convert to fraction form
    65,938.56/98,907.60 = 36,340.80/x
  3. Step 3: Cross multiply
    65,938.56x = 98,907.60 × 36,340.80
  4. Step 4: Simplify right side
    65,938.56x = 3,594,381,310.08
  5. Step 5: Solve for x
    x = 3,594,381,310.08/65,938.56
  6. Step 6: Final answer
    x = 54,511.07

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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.