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Finding the Fourth Proportional to 64,840.56, 89,476.50 and 36,163.16

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Solution

The fourth proportional to 64,840.56, 89,476.50 and 36,163.16 is: 49,903.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,840.56 : 89,476.50 = 36,163.16 : x
  2. Step 2: Convert to fraction form
    64,840.56/89,476.50 = 36,163.16/x
  3. Step 3: Cross multiply
    64,840.56x = 89,476.50 × 36,163.16
  4. Step 4: Simplify right side
    64,840.56x = 3,235,752,985.74
  5. Step 5: Solve for x
    x = 3,235,752,985.74/64,840.56
  6. Step 6: Final answer
    x = 49,903.22

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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.