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Finding the Fourth Proportional to 66,960, 92,401.20 and 36,744.84

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Solution

The fourth proportional to 66,960, 92,401.20 and 36,744.84 is: 50,705.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,960 : 92,401.20 = 36,744.84 : x
  2. Step 2: Convert to fraction form
    66,960/92,401.20 = 36,744.84/x
  3. Step 3: Cross multiply
    66,960x = 92,401.20 × 36,744.84
  4. Step 4: Simplify right side
    66,960x = 3,395,267,309.81
  5. Step 5: Solve for x
    x = 3,395,267,309.81/66,960
  6. Step 6: Final answer
    x = 50,705.90

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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.