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Finding the Fourth Proportional to 64,910.58, 89,580.78 and 36,615.66

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Solution

The fourth proportional to 64,910.58, 89,580.78 and 36,615.66 is: 50,531.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,910.58 : 89,580.78 = 36,615.66 : x
  2. Step 2: Convert to fraction form
    64,910.58/89,580.78 = 36,615.66/x
  3. Step 3: Cross multiply
    64,910.58x = 89,580.78 × 36,615.66
  4. Step 4: Simplify right side
    64,910.58x = 3,280,059,383.01
  5. Step 5: Solve for x
    x = 3,280,059,383.01/64,910.58
  6. Step 6: Final answer
    x = 50,531.97

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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.