Home / 90,020.32-135,045.12-27,690.88

Finding the Fourth Proportional to 90,020.32, 135,045.12 and 27,690.88

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Solution

The fourth proportional to 90,020.32, 135,045.12 and 27,690.88 is: 41,540.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,020.32 : 135,045.12 = 27,690.88 : x
  2. Step 2: Convert to fraction form
    90,020.32/135,045.12 = 27,690.88/x
  3. Step 3: Cross multiply
    90,020.32x = 135,045.12 × 27,690.88
  4. Step 4: Simplify right side
    90,020.32x = 3,739,518,212.51
  5. Step 5: Solve for x
    x = 3,739,518,212.51/90,020.32
  6. Step 6: Final answer
    x = 41,540.82

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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.