Home / 50,721.21-76,047.80-45,443.25

Finding the Fourth Proportional to 50,721.21, 76,047.80 and 45,443.25

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Solution

The fourth proportional to 50,721.21, 76,047.80 and 45,443.25 is: 68,134.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,721.21 : 76,047.80 = 45,443.25 : x
  2. Step 2: Convert to fraction form
    50,721.21/76,047.80 = 45,443.25/x
  3. Step 3: Cross multiply
    50,721.21x = 76,047.80 × 45,443.25
  4. Step 4: Simplify right side
    50,721.21x = 3,455,858,960.13
  5. Step 5: Solve for x
    x = 3,455,858,960.13/50,721.21
  6. Step 6: Final answer
    x = 68,134.40

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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.