Home / 90,595.12-135,892.68-28,270.48

Finding the Fourth Proportional to 90,595.12, 135,892.68 and 28,270.48

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Solution

The fourth proportional to 90,595.12, 135,892.68 and 28,270.48 is: 42,405.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,595.12 : 135,892.68 = 28,270.48 : x
  2. Step 2: Convert to fraction form
    90,595.12/135,892.68 = 28,270.48/x
  3. Step 3: Cross multiply
    90,595.12x = 135,892.68 × 28,270.48
  4. Step 4: Simplify right side
    90,595.12x = 3,841,751,292.09
  5. Step 5: Solve for x
    x = 3,841,751,292.09/90,595.12
  6. Step 6: Final answer
    x = 42,405.72

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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.