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Finding the Fourth Proportional to 66,363.02, 91,581.51 and 36,148.46

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Solution

The fourth proportional to 66,363.02, 91,581.51 and 36,148.46 is: 49,885.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,363.02 : 91,581.51 = 36,148.46 : x
  2. Step 2: Convert to fraction form
    66,363.02/91,581.51 = 36,148.46/x
  3. Step 3: Cross multiply
    66,363.02x = 91,581.51 × 36,148.46
  4. Step 4: Simplify right side
    66,363.02x = 3,310,530,550.97
  5. Step 5: Solve for x
    x = 3,310,530,550.97/66,363.02
  6. Step 6: Final answer
    x = 49,885.17

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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.