Home / 90,582.28-135,878.16-27,400.78

Finding the Fourth Proportional to 90,582.28, 135,878.16 and 27,400.78

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Solution

The fourth proportional to 90,582.28, 135,878.16 and 27,400.78 is: 41,102.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,582.28 : 135,878.16 = 27,400.78 : x
  2. Step 2: Convert to fraction form
    90,582.28/135,878.16 = 27,400.78/x
  3. Step 3: Cross multiply
    90,582.28x = 135,878.16 × 27,400.78
  4. Step 4: Simplify right side
    90,582.28x = 3,723,167,500.46
  5. Step 5: Solve for x
    x = 3,723,167,500.46/90,582.28
  6. Step 6: Final answer
    x = 41,102.60

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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.