Home / 89,681.12-123,760.74-49,396.28

Finding the Fourth Proportional to 89,681.12, 123,760.74 and 49,396.28

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Solution

The fourth proportional to 89,681.12, 123,760.74 and 49,396.28 is: 68,167.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,681.12 : 123,760.74 = 49,396.28 : x
  2. Step 2: Convert to fraction form
    89,681.12/123,760.74 = 49,396.28/x
  3. Step 3: Cross multiply
    89,681.12x = 123,760.74 × 49,396.28
  4. Step 4: Simplify right side
    89,681.12x = 6,113,320,166.05
  5. Step 5: Solve for x
    x = 6,113,320,166.05/89,681.12
  6. Step 6: Final answer
    x = 68,167.30

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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.