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Finding the Fourth Proportional to 64,869.66, 89,519.99 and 36,575.15

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Solution

The fourth proportional to 64,869.66, 89,519.99 and 36,575.15 is: 50,473.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,869.66 : 89,519.99 = 36,575.15 : x
  2. Step 2: Convert to fraction form
    64,869.66/89,519.99 = 36,575.15/x
  3. Step 3: Cross multiply
    64,869.66x = 89,519.99 × 36,575.15
  4. Step 4: Simplify right side
    64,869.66x = 3,274,206,431.77
  5. Step 5: Solve for x
    x = 3,274,206,431.77/64,869.66
  6. Step 6: Final answer
    x = 50,473.62

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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.