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Finding the Fourth Proportional to 65,751.62, 98,628.71 and 21,378.24

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Solution

The fourth proportional to 65,751.62, 98,628.71 and 21,378.24 is: 32,067.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,751.62 : 98,628.71 = 21,378.24 : x
  2. Step 2: Convert to fraction form
    65,751.62/98,628.71 = 21,378.24/x
  3. Step 3: Cross multiply
    65,751.62x = 98,628.71 × 21,378.24
  4. Step 4: Simplify right side
    65,751.62x = 2,108,508,126.38
  5. Step 5: Solve for x
    x = 2,108,508,126.38/65,751.62
  6. Step 6: Final answer
    x = 32,067.78

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1.5x scale

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.