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Finding the Fourth Proportional to 64,719.77, 89,310.84 and 36,040.44

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Solution

The fourth proportional to 64,719.77, 89,310.84 and 36,040.44 is: 49,734.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,719.77 : 89,310.84 = 36,040.44 : x
  2. Step 2: Convert to fraction form
    64,719.77/89,310.84 = 36,040.44/x
  3. Step 3: Cross multiply
    64,719.77x = 89,310.84 × 36,040.44
  4. Step 4: Simplify right side
    64,719.77x = 3,218,801,970.37
  5. Step 5: Solve for x
    x = 3,218,801,970.37/64,719.77
  6. Step 6: Final answer
    x = 49,734.45

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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.