Home / 90,650.08-135,928.40-40,687.34

Finding the Fourth Proportional to 90,650.08, 135,928.40 and 40,687.34

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Solution

The fourth proportional to 90,650.08, 135,928.40 and 40,687.34 is: 61,010.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,650.08 : 135,928.40 = 40,687.34 : x
  2. Step 2: Convert to fraction form
    90,650.08/135,928.40 = 40,687.34/x
  3. Step 3: Cross multiply
    90,650.08x = 135,928.40 × 40,687.34
  4. Step 4: Simplify right side
    90,650.08x = 5,530,565,026.46
  5. Step 5: Solve for x
    x = 5,530,565,026.46/90,650.08
  6. Step 6: Final answer
    x = 61,010.04

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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.