Home / 89,431.88-123,407.97-49,145.18

Finding the Fourth Proportional to 89,431.88, 123,407.97 and 49,145.18

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Solution

The fourth proportional to 89,431.88, 123,407.97 and 49,145.18 is: 67,815.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,431.88 : 123,407.97 = 49,145.18 : x
  2. Step 2: Convert to fraction form
    89,431.88/123,407.97 = 49,145.18/x
  3. Step 3: Cross multiply
    89,431.88x = 123,407.97 × 49,145.18
  4. Step 4: Simplify right side
    89,431.88x = 6,064,906,899.08
  5. Step 5: Solve for x
    x = 6,064,906,899.08/89,431.88
  6. Step 6: Final answer
    x = 67,815.94

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1.5x scale

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.