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Finding the Fourth Proportional to 64,512.90, 96,665.67 and 54,144.90

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Solution

The fourth proportional to 64,512.90, 96,665.67 and 54,144.90 is: 81,130.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,512.90 : 96,665.67 = 54,144.90 : x
  2. Step 2: Convert to fraction form
    64,512.90/96,665.67 = 54,144.90/x
  3. Step 3: Cross multiply
    64,512.90x = 96,665.67 × 54,144.90
  4. Step 4: Simplify right side
    64,512.90x = 5,233,953,035.58
  5. Step 5: Solve for x
    x = 5,233,953,035.58/64,512.90
  6. Step 6: Final answer
    x = 81,130.33

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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.