Home / 50,507.15-75,754.65-20,921.90

Finding the Fourth Proportional to 50,507.15, 75,754.65 and 20,921.90

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Solution

The fourth proportional to 50,507.15, 75,754.65 and 20,921.90 is: 31,380.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,507.15 : 75,754.65 = 20,921.90 : x
  2. Step 2: Convert to fraction form
    50,507.15/75,754.65 = 20,921.90/x
  3. Step 3: Cross multiply
    50,507.15x = 75,754.65 × 20,921.90
  4. Step 4: Simplify right side
    50,507.15x = 1,584,931,211.84
  5. Step 5: Solve for x
    x = 1,584,931,211.84/50,507.15
  6. Step 6: Final answer
    x = 31,380.33

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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.