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Finding the Fourth Proportional to 90,607.60, 125,054.78 and 52,361.86

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Solution

The fourth proportional to 90,607.60, 125,054.78 and 52,361.86 is: 72,268.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,607.60 : 125,054.78 = 52,361.86 : x
  2. Step 2: Convert to fraction form
    90,607.60/125,054.78 = 52,361.86/x
  3. Step 3: Cross multiply
    90,607.60x = 125,054.78 × 52,361.86
  4. Step 4: Simplify right side
    90,607.60x = 6,548,100,882.69
  5. Step 5: Solve for x
    x = 6,548,100,882.69/90,607.60
  6. Step 6: Final answer
    x = 72,268.78

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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.