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Finding the Fourth Proportional to 65,863.60, 98,795.40 and 54,928.60

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Solution

The fourth proportional to 65,863.60, 98,795.40 and 54,928.60 is: 82,392.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,863.60 : 98,795.40 = 54,928.60 : x
  2. Step 2: Convert to fraction form
    65,863.60/98,795.40 = 54,928.60/x
  3. Step 3: Cross multiply
    65,863.60x = 98,795.40 × 54,928.60
  4. Step 4: Simplify right side
    65,863.60x = 5,426,693,008.44
  5. Step 5: Solve for x
    x = 5,426,693,008.44/65,863.60
  6. Step 6: Final answer
    x = 82,392.90

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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.