Home / 90,543.21-135,948.11-50,640.37

Finding the Fourth Proportional to 90,543.21, 135,948.11 and 50,640.37

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Solution

The fourth proportional to 90,543.21, 135,948.11 and 50,640.37 is: 76,035.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,543.21 : 135,948.11 = 50,640.37 : x
  2. Step 2: Convert to fraction form
    90,543.21/135,948.11 = 50,640.37/x
  3. Step 3: Cross multiply
    90,543.21x = 135,948.11 × 50,640.37
  4. Step 4: Simplify right side
    90,543.21x = 6,884,462,591.20
  5. Step 5: Solve for x
    x = 6,884,462,591.20/90,543.21
  6. Step 6: Final answer
    x = 76,035.11

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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.