Home / 90,857.25-136,291.34-28,527.75

Finding the Fourth Proportional to 90,857.25, 136,291.34 and 28,527.75

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Solution

The fourth proportional to 90,857.25, 136,291.34 and 28,527.75 is: 42,793.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,857.25 : 136,291.34 = 28,527.75 : x
  2. Step 2: Convert to fraction form
    90,857.25/136,291.34 = 28,527.75/x
  3. Step 3: Cross multiply
    90,857.25x = 136,291.34 × 28,527.75
  4. Step 4: Simplify right side
    90,857.25x = 3,888,085,346.00
  5. Step 5: Solve for x
    x = 3,888,085,346.00/90,857.25
  6. Step 6: Final answer
    x = 42,793.34

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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.