Home / 81,156.78-111,998.84-45,348.30

Finding the Fourth Proportional to 81,156.78, 111,998.84 and 45,348.30

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Solution

The fourth proportional to 81,156.78, 111,998.84 and 45,348.30 is: 62,582.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,156.78 : 111,998.84 = 45,348.30 : x
  2. Step 2: Convert to fraction form
    81,156.78/111,998.84 = 45,348.30/x
  3. Step 3: Cross multiply
    81,156.78x = 111,998.84 × 45,348.30
  4. Step 4: Simplify right side
    81,156.78x = 5,078,956,769.23
  5. Step 5: Solve for x
    x = 5,078,956,769.23/81,156.78
  6. Step 6: Final answer
    x = 62,582.04

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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.