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Finding the Fourth Proportional to 65,747.60, 98,567.40 and 28,336.40

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Solution

The fourth proportional to 65,747.60, 98,567.40 and 28,336.40 is: 42,481.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,747.60 : 98,567.40 = 28,336.40 : x
  2. Step 2: Convert to fraction form
    65,747.60/98,567.40 = 28,336.40/x
  3. Step 3: Cross multiply
    65,747.60x = 98,567.40 × 28,336.40
  4. Step 4: Simplify right side
    65,747.60x = 2,793,045,273.36
  5. Step 5: Solve for x
    x = 2,793,045,273.36/65,747.60
  6. Step 6: Final answer
    x = 42,481.33

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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.