Home / 81,017.72-111,774.92-50,388.80

Finding the Fourth Proportional to 81,017.72, 111,774.92 and 50,388.80

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Solution

The fourth proportional to 81,017.72, 111,774.92 and 50,388.80 is: 69,518.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,017.72 : 111,774.92 = 50,388.80 : x
  2. Step 2: Convert to fraction form
    81,017.72/111,774.92 = 50,388.80/x
  3. Step 3: Cross multiply
    81,017.72x = 111,774.92 × 50,388.80
  4. Step 4: Simplify right side
    81,017.72x = 5,632,204,088.90
  5. Step 5: Solve for x
    x = 5,632,204,088.90/81,017.72
  6. Step 6: Final answer
    x = 69,518.18

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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.