Home / 89,719.65-123,807.47-49,431.20

Finding the Fourth Proportional to 89,719.65, 123,807.47 and 49,431.20

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Solution

The fourth proportional to 89,719.65, 123,807.47 and 49,431.20 is: 68,211.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,719.65 : 123,807.47 = 49,431.20 : x
  2. Step 2: Convert to fraction form
    89,719.65/123,807.47 = 49,431.20/x
  3. Step 3: Cross multiply
    89,719.65x = 123,807.47 × 49,431.20
  4. Step 4: Simplify right side
    89,719.65x = 6,119,950,944.87
  5. Step 5: Solve for x
    x = 6,119,950,944.87/89,719.65
  6. Step 6: Final answer
    x = 68,211.94

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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.