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Finding the Fourth Proportional to 65,449.80, 98,172.54 and 18,702.60

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Solution

The fourth proportional to 65,449.80, 98,172.54 and 18,702.60 is: 28,053.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,449.80 : 98,172.54 = 18,702.60 : x
  2. Step 2: Convert to fraction form
    65,449.80/98,172.54 = 18,702.60/x
  3. Step 3: Cross multiply
    65,449.80x = 98,172.54 × 18,702.60
  4. Step 4: Simplify right side
    65,449.80x = 1,836,081,746.60
  5. Step 5: Solve for x
    x = 1,836,081,746.60/65,449.80
  6. Step 6: Final answer
    x = 28,053.28

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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.