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Finding the Fourth Proportional to 65,150.90, 89,912.21 and 36,470.01

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Solution

The fourth proportional to 65,150.90, 89,912.21 and 36,470.01 is: 50,330.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,150.90 : 89,912.21 = 36,470.01 : x
  2. Step 2: Convert to fraction form
    65,150.90/89,912.21 = 36,470.01/x
  3. Step 3: Cross multiply
    65,150.90x = 89,912.21 × 36,470.01
  4. Step 4: Simplify right side
    65,150.90x = 3,279,099,015.47
  5. Step 5: Solve for x
    x = 3,279,099,015.47/65,150.90
  6. Step 6: Final answer
    x = 50,330.84

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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.