Home / 90,339.20-135,536.16-28,010.24

Finding the Fourth Proportional to 90,339.20, 135,536.16 and 28,010.24

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Solution

The fourth proportional to 90,339.20, 135,536.16 and 28,010.24 is: 42,023.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,339.20 : 135,536.16 = 28,010.24 : x
  2. Step 2: Convert to fraction form
    90,339.20/135,536.16 = 28,010.24/x
  3. Step 3: Cross multiply
    90,339.20x = 135,536.16 × 28,010.24
  4. Step 4: Simplify right side
    90,339.20x = 3,796,400,370.28
  5. Step 5: Solve for x
    x = 3,796,400,370.28/90,339.20
  6. Step 6: Final answer
    x = 42,023.84

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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.