Home / 57,137.80-78,849.30-31,988.20

Finding the Fourth Proportional to 57,137.80, 78,849.30 and 31,988.20

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Solution

The fourth proportional to 57,137.80, 78,849.30 and 31,988.20 is: 44,143.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,137.80 : 78,849.30 = 31,988.20 : x
  2. Step 2: Convert to fraction form
    57,137.80/78,849.30 = 31,988.20/x
  3. Step 3: Cross multiply
    57,137.80x = 78,849.30 × 31,988.20
  4. Step 4: Simplify right side
    57,137.80x = 2,522,247,178.26
  5. Step 5: Solve for x
    x = 2,522,247,178.26/57,137.80
  6. Step 6: Final answer
    x = 44,143.23

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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.