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Finding the Fourth Proportional to 65,668.47, 98,492.91 and 18,278.61

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Solution

The fourth proportional to 65,668.47, 98,492.91 and 18,278.61 is: 27,415.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,668.47 : 98,492.91 = 18,278.61 : x
  2. Step 2: Convert to fraction form
    65,668.47/98,492.91 = 18,278.61/x
  3. Step 3: Cross multiply
    65,668.47x = 98,492.91 × 18,278.61
  4. Step 4: Simplify right side
    65,668.47x = 1,800,313,708.60
  5. Step 5: Solve for x
    x = 1,800,313,708.60/65,668.47
  6. Step 6: Final answer
    x = 27,415.19

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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.