Home / 90,441.64-135,675.42-28,117

Finding the Fourth Proportional to 90,441.64, 135,675.42 and 28,117

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Solution

The fourth proportional to 90,441.64, 135,675.42 and 28,117 is: 42,179.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,441.64 : 135,675.42 = 28,117 : x
  2. Step 2: Convert to fraction form
    90,441.64/135,675.42 = 28,117/x
  3. Step 3: Cross multiply
    90,441.64x = 135,675.42 × 28,117
  4. Step 4: Simplify right side
    90,441.64x = 3,814,785,784.14
  5. Step 5: Solve for x
    x = 3,814,785,784.14/90,441.64
  6. Step 6: Final answer
    x = 42,179.53

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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.