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Finding the Fourth Proportional to 65,851.70, 98,767.49 and 21,478.37

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Solution

The fourth proportional to 65,851.70, 98,767.49 and 21,478.37 is: 32,214.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,851.70 : 98,767.49 = 21,478.37 : x
  2. Step 2: Convert to fraction form
    65,851.70/98,767.49 = 21,478.37/x
  3. Step 3: Cross multiply
    65,851.70x = 98,767.49 × 21,478.37
  4. Step 4: Simplify right side
    65,851.70x = 2,121,364,092.96
  5. Step 5: Solve for x
    x = 2,121,364,092.96/65,851.70
  6. Step 6: Final answer
    x = 32,214.27

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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.