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Finding the Fourth Proportional to 65,605.60, 98,354.40 and 28,194.40

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Solution

The fourth proportional to 65,605.60, 98,354.40 and 28,194.40 is: 42,268.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,605.60 : 98,354.40 = 28,194.40 : x
  2. Step 2: Convert to fraction form
    65,605.60/98,354.40 = 28,194.40/x
  3. Step 3: Cross multiply
    65,605.60x = 98,354.40 × 28,194.40
  4. Step 4: Simplify right side
    65,605.60x = 2,773,043,295.36
  5. Step 5: Solve for x
    x = 2,773,043,295.36/65,605.60
  6. Step 6: Final answer
    x = 42,268.39

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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.