Home / 90,742.60-135,951.90-43,892.20

Finding the Fourth Proportional to 90,742.60, 135,951.90 and 43,892.20

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Solution

The fourth proportional to 90,742.60, 135,951.90 and 43,892.20 is: 65,759.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,742.60 : 135,951.90 = 43,892.20 : x
  2. Step 2: Convert to fraction form
    90,742.60/135,951.90 = 43,892.20/x
  3. Step 3: Cross multiply
    90,742.60x = 135,951.90 × 43,892.20
  4. Step 4: Simplify right side
    90,742.60x = 5,967,227,985.18
  5. Step 5: Solve for x
    x = 5,967,227,985.18/90,742.60
  6. Step 6: Final answer
    x = 65,759.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.