Home / 90,659.11-135,988.64-28,329.61

Finding the Fourth Proportional to 90,659.11, 135,988.64 and 28,329.61

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Solution

The fourth proportional to 90,659.11, 135,988.64 and 28,329.61 is: 42,494.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,659.11 : 135,988.64 = 28,329.61 : x
  2. Step 2: Convert to fraction form
    90,659.11/135,988.64 = 28,329.61/x
  3. Step 3: Cross multiply
    90,659.11x = 135,988.64 × 28,329.61
  4. Step 4: Simplify right side
    90,659.11x = 3,852,505,135.63
  5. Step 5: Solve for x
    x = 3,852,505,135.63/90,659.11
  6. Step 6: Final answer
    x = 42,494.41

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Similar ratio
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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.