Home / 89,721.77-123,815.45-49,434.62

Finding the Fourth Proportional to 89,721.77, 123,815.45 and 49,434.62

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Solution

The fourth proportional to 89,721.77, 123,815.45 and 49,434.62 is: 68,219.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,721.77 : 123,815.45 = 49,434.62 : x
  2. Step 2: Convert to fraction form
    89,721.77/123,815.45 = 49,434.62/x
  3. Step 3: Cross multiply
    89,721.77x = 123,815.45 × 49,434.62
  4. Step 4: Simplify right side
    89,721.77x = 6,120,769,473.71
  5. Step 5: Solve for x
    x = 6,120,769,473.71/89,721.77
  6. Step 6: Final answer
    x = 68,219.45

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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.