Home / 76,631.91-105,692.10-49,783.04

Finding the Fourth Proportional to 76,631.91, 105,692.10 and 49,783.04

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Solution

The fourth proportional to 76,631.91, 105,692.10 and 49,783.04 is: 68,661.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,631.91 : 105,692.10 = 49,783.04 : x
  2. Step 2: Convert to fraction form
    76,631.91/105,692.10 = 49,783.04/x
  3. Step 3: Cross multiply
    76,631.91x = 105,692.10 × 49,783.04
  4. Step 4: Simplify right side
    76,631.91x = 5,261,673,513.52
  5. Step 5: Solve for x
    x = 5,261,673,513.52/76,631.91
  6. Step 6: Final answer
    x = 68,661.65

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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.