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Finding the Fourth Proportional to 64,687.36, 89,269.96 and 36,008.50

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Solution

The fourth proportional to 64,687.36, 89,269.96 and 36,008.50 is: 49,692.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,687.36 : 89,269.96 = 36,008.50 : x
  2. Step 2: Convert to fraction form
    64,687.36/89,269.96 = 36,008.50/x
  3. Step 3: Cross multiply
    64,687.36x = 89,269.96 × 36,008.50
  4. Step 4: Simplify right side
    64,687.36x = 3,214,477,354.66
  5. Step 5: Solve for x
    x = 3,214,477,354.66/64,687.36
  6. Step 6: Final answer
    x = 49,692.51

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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.