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Finding the Fourth Proportional to 64,739.59, 89,340.78 and 36,059.02

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Solution

The fourth proportional to 64,739.59, 89,340.78 and 36,059.02 is: 49,761.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,739.59 : 89,340.78 = 36,059.02 : x
  2. Step 2: Convert to fraction form
    64,739.59/89,340.78 = 36,059.02/x
  3. Step 3: Cross multiply
    64,739.59x = 89,340.78 × 36,059.02
  4. Step 4: Simplify right side
    64,739.59x = 3,221,540,972.84
  5. Step 5: Solve for x
    x = 3,221,540,972.84/64,739.59
  6. Step 6: Final answer
    x = 49,761.53

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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.