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Finding the Fourth Proportional to 64,606.78, 96,910.34 and 20,237.41

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Solution

The fourth proportional to 64,606.78, 96,910.34 and 20,237.41 is: 30,356.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,606.78 : 96,910.34 = 20,237.41 : x
  2. Step 2: Convert to fraction form
    64,606.78/96,910.34 = 20,237.41/x
  3. Step 3: Cross multiply
    64,606.78x = 96,910.34 × 20,237.41
  4. Step 4: Simplify right side
    64,606.78x = 1,961,214,283.82
  5. Step 5: Solve for x
    x = 1,961,214,283.82/64,606.78
  6. Step 6: Final answer
    x = 30,356.17

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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.