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Finding the Fourth Proportional to 66,358.50, 91,574.74 and 36,550.50

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Solution

The fourth proportional to 66,358.50, 91,574.74 and 36,550.50 is: 50,439.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,358.50 : 91,574.74 = 36,550.50 : x
  2. Step 2: Convert to fraction form
    66,358.50/91,574.74 = 36,550.50/x
  3. Step 3: Cross multiply
    66,358.50x = 91,574.74 × 36,550.50
  4. Step 4: Simplify right side
    66,358.50x = 3,347,102,534.37
  5. Step 5: Solve for x
    x = 3,347,102,534.37/66,358.50
  6. Step 6: Final answer
    x = 50,439.70

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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.