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Finding the Fourth Proportional to 65,627.80, 98,340.90 and 48,909.40

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Solution

The fourth proportional to 65,627.80, 98,340.90 and 48,909.40 is: 73,288.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,627.80 : 98,340.90 = 48,909.40 : x
  2. Step 2: Convert to fraction form
    65,627.80/98,340.90 = 48,909.40/x
  3. Step 3: Cross multiply
    65,627.80x = 98,340.90 × 48,909.40
  4. Step 4: Simplify right side
    65,627.80x = 4,809,794,414.46
  5. Step 5: Solve for x
    x = 4,809,794,414.46/65,627.80
  6. Step 6: Final answer
    x = 73,288.98

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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.