Home / 81,156.76-111,996.09-45,346.80

Finding the Fourth Proportional to 81,156.76, 111,996.09 and 45,346.80

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Solution

The fourth proportional to 81,156.76, 111,996.09 and 45,346.80 is: 62,578.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,156.76 : 111,996.09 = 45,346.80 : x
  2. Step 2: Convert to fraction form
    81,156.76/111,996.09 = 45,346.80/x
  3. Step 3: Cross multiply
    81,156.76x = 111,996.09 × 45,346.80
  4. Step 4: Simplify right side
    81,156.76x = 5,078,663,507.30
  5. Step 5: Solve for x
    x = 5,078,663,507.30/81,156.76
  6. Step 6: Final answer
    x = 62,578.44

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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.