Home / 89,720.13-123,815.22-49,433.31

Finding the Fourth Proportional to 89,720.13, 123,815.22 and 49,433.31

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Solution

The fourth proportional to 89,720.13, 123,815.22 and 49,433.31 is: 68,218.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,720.13 : 123,815.22 = 49,433.31 : x
  2. Step 2: Convert to fraction form
    89,720.13/123,815.22 = 49,433.31/x
  3. Step 3: Cross multiply
    89,720.13x = 123,815.22 × 49,433.31
  4. Step 4: Simplify right side
    89,720.13x = 6,120,596,152.98
  5. Step 5: Solve for x
    x = 6,120,596,152.98/89,720.13
  6. Step 6: Final answer
    x = 68,218.76

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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.