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Finding the Fourth Proportional to 64,687.44, 89,268.30 and 36,393.36

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Solution

The fourth proportional to 64,687.44, 89,268.30 and 36,393.36 is: 50,222.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,687.44 : 89,268.30 = 36,393.36 : x
  2. Step 2: Convert to fraction form
    64,687.44/89,268.30 = 36,393.36/x
  3. Step 3: Cross multiply
    64,687.44x = 89,268.30 × 36,393.36
  4. Step 4: Simplify right side
    64,687.44x = 3,248,773,378.49
  5. Step 5: Solve for x
    x = 3,248,773,378.49/64,687.44
  6. Step 6: Final answer
    x = 50,222.63

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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.