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Finding the Fourth Proportional to 64,648.56, 89,266.68 and 41,998.80

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Solution

The fourth proportional to 64,648.56, 89,266.68 and 41,998.80 is: 57,991.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,648.56 : 89,266.68 = 41,998.80 : x
  2. Step 2: Convert to fraction form
    64,648.56/89,266.68 = 41,998.80/x
  3. Step 3: Cross multiply
    64,648.56x = 89,266.68 × 41,998.80
  4. Step 4: Simplify right side
    64,648.56x = 3,749,093,439.98
  5. Step 5: Solve for x
    x = 3,749,093,439.98/64,648.56
  6. Step 6: Final answer
    x = 57,991.91

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1.5x scale

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.