Home / 90,043.73-135,073.27-26,859.78

Finding the Fourth Proportional to 90,043.73, 135,073.27 and 26,859.78

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Solution

The fourth proportional to 90,043.73, 135,073.27 and 26,859.78 is: 40,291.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,043.73 : 135,073.27 = 26,859.78 : x
  2. Step 2: Convert to fraction form
    90,043.73/135,073.27 = 26,859.78/x
  3. Step 3: Cross multiply
    90,043.73x = 135,073.27 × 26,859.78
  4. Step 4: Simplify right side
    90,043.73x = 3,628,038,181.78
  5. Step 5: Solve for x
    x = 3,628,038,181.78/90,043.73
  6. Step 6: Final answer
    x = 40,291.96

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1.5x scale

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.