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Finding the Fourth Proportional to 64,609.53, 89,161.11 and 36,315.21

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Solution

The fourth proportional to 64,609.53, 89,161.11 and 36,315.21 is: 50,114.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,609.53 : 89,161.11 = 36,315.21 : x
  2. Step 2: Convert to fraction form
    64,609.53/89,161.11 = 36,315.21/x
  3. Step 3: Cross multiply
    64,609.53x = 89,161.11 × 36,315.21
  4. Step 4: Simplify right side
    64,609.53x = 3,237,904,433.48
  5. Step 5: Solve for x
    x = 3,237,904,433.48/64,609.53
  6. Step 6: Final answer
    x = 50,114.97

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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.