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Finding the Fourth Proportional to 64,625.65, 96,938.49 and 20,255.84

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Solution

The fourth proportional to 64,625.65, 96,938.49 and 20,255.84 is: 30,383.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,625.65 : 96,938.49 = 20,255.84 : x
  2. Step 2: Convert to fraction form
    64,625.65/96,938.49 = 20,255.84/x
  3. Step 3: Cross multiply
    64,625.65x = 96,938.49 × 20,255.84
  4. Step 4: Simplify right side
    64,625.65x = 1,963,570,543.28
  5. Step 5: Solve for x
    x = 1,963,570,543.28/64,625.65
  6. Step 6: Final answer
    x = 30,383.76

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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.