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Finding the Fourth Proportional to 66,533.57, 91,831.74 and 43,876.65

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Solution

The fourth proportional to 66,533.57, 91,831.74 and 43,876.65 is: 60,559.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,533.57 : 91,831.74 = 43,876.65 : x
  2. Step 2: Convert to fraction form
    66,533.57/91,831.74 = 43,876.65/x
  3. Step 3: Cross multiply
    66,533.57x = 91,831.74 × 43,876.65
  4. Step 4: Simplify right side
    66,533.57x = 4,029,269,114.87
  5. Step 5: Solve for x
    x = 4,029,269,114.87/66,533.57
  6. Step 6: Final answer
    x = 60,559.95

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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.