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Finding the Fourth Proportional to 96,930.40, 133,777.92 and 63,040

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Solution

The fourth proportional to 96,930.40, 133,777.92 and 63,040 is: 87,004.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,930.40 : 133,777.92 = 63,040 : x
  2. Step 2: Convert to fraction form
    96,930.40/133,777.92 = 63,040/x
  3. Step 3: Cross multiply
    96,930.40x = 133,777.92 × 63,040
  4. Step 4: Simplify right side
    96,930.40x = 8,433,360,076.80
  5. Step 5: Solve for x
    x = 8,433,360,076.80/96,930.40
  6. Step 6: Final answer
    x = 87,004.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.