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Finding the Fourth Proportional to 65,718.60, 98,588.70 and 28,296.60

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Solution

The fourth proportional to 65,718.60, 98,588.70 and 28,296.60 is: 42,449.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,718.60 : 98,588.70 = 28,296.60 : x
  2. Step 2: Convert to fraction form
    65,718.60/98,588.70 = 28,296.60/x
  3. Step 3: Cross multiply
    65,718.60x = 98,588.70 × 28,296.60
  4. Step 4: Simplify right side
    65,718.60x = 2,789,725,008.42
  5. Step 5: Solve for x
    x = 2,789,725,008.42/65,718.60
  6. Step 6: Final answer
    x = 42,449.55

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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.