Home / 89,784.18-123,903-49,499.36

Finding the Fourth Proportional to 89,784.18, 123,903 and 49,499.36

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Solution

The fourth proportional to 89,784.18, 123,903 and 49,499.36 is: 68,309.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,784.18 : 123,903 = 49,499.36 : x
  2. Step 2: Convert to fraction form
    89,784.18/123,903 = 49,499.36/x
  3. Step 3: Cross multiply
    89,784.18x = 123,903 × 49,499.36
  4. Step 4: Simplify right side
    89,784.18x = 6,133,119,202.08
  5. Step 5: Solve for x
    x = 6,133,119,202.08/89,784.18
  6. Step 6: Final answer
    x = 68,309.58

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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.