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Finding the Fourth Proportional to 65,642.60, 98,464.51 and 21,269.49

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Solution

The fourth proportional to 65,642.60, 98,464.51 and 21,269.49 is: 31,904.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,642.60 : 98,464.51 = 21,269.49 : x
  2. Step 2: Convert to fraction form
    65,642.60/98,464.51 = 21,269.49/x
  3. Step 3: Cross multiply
    65,642.60x = 98,464.51 × 21,269.49
  4. Step 4: Simplify right side
    65,642.60x = 2,094,289,568.14
  5. Step 5: Solve for x
    x = 2,094,289,568.14/65,642.60
  6. Step 6: Final answer
    x = 31,904.43

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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.