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Finding the Fourth Proportional to 66,154.50, 91,293.21 and 36,346.50

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Solution

The fourth proportional to 66,154.50, 91,293.21 and 36,346.50 is: 50,158.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,154.50 : 91,293.21 = 36,346.50 : x
  2. Step 2: Convert to fraction form
    66,154.50/91,293.21 = 36,346.50/x
  3. Step 3: Cross multiply
    66,154.50x = 91,293.21 × 36,346.50
  4. Step 4: Simplify right side
    66,154.50x = 3,318,188,657.27
  5. Step 5: Solve for x
    x = 3,318,188,657.27/66,154.50
  6. Step 6: Final answer
    x = 50,158.17

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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.