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Finding the Fourth Proportional to 64,780.49, 96,951.26 and 39,836.34

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Solution

The fourth proportional to 64,780.49, 96,951.26 and 39,836.34 is: 59,619.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,780.49 : 96,951.26 = 39,836.34 : x
  2. Step 2: Convert to fraction form
    64,780.49/96,951.26 = 39,836.34/x
  3. Step 3: Cross multiply
    64,780.49x = 96,951.26 × 39,836.34
  4. Step 4: Simplify right side
    64,780.49x = 3,862,183,356.79
  5. Step 5: Solve for x
    x = 3,862,183,356.79/64,780.49
  6. Step 6: Final answer
    x = 59,619.55

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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.