Home / 90,432.14-135,676.44-54,448.04

Finding the Fourth Proportional to 90,432.14, 135,676.44 and 54,448.04

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Solution

The fourth proportional to 90,432.14, 135,676.44 and 54,448.04 is: 81,689.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,432.14 : 135,676.44 = 54,448.04 : x
  2. Step 2: Convert to fraction form
    90,432.14/135,676.44 = 54,448.04/x
  3. Step 3: Cross multiply
    90,432.14x = 135,676.44 × 54,448.04
  4. Step 4: Simplify right side
    90,432.14x = 7,387,316,571.37
  5. Step 5: Solve for x
    x = 7,387,316,571.37/90,432.14
  6. Step 6: Final answer
    x = 81,689.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.