Home / 89,784.45-123,903.41-49,499.78

Finding the Fourth Proportional to 89,784.45, 123,903.41 and 49,499.78

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Solution

The fourth proportional to 89,784.45, 123,903.41 and 49,499.78 is: 68,310.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,784.45 : 123,903.41 = 49,499.78 : x
  2. Step 2: Convert to fraction form
    89,784.45/123,903.41 = 49,499.78/x
  3. Step 3: Cross multiply
    89,784.45x = 123,903.41 × 49,499.78
  4. Step 4: Simplify right side
    89,784.45x = 6,133,190,669.23
  5. Step 5: Solve for x
    x = 6,133,190,669.23/89,784.45
  6. Step 6: Final answer
    x = 68,310.17

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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.