Home / 90,649.41-135,927.38-40,686.68

Finding the Fourth Proportional to 90,649.41, 135,927.38 and 40,686.68

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Solution

The fourth proportional to 90,649.41, 135,927.38 and 40,686.68 is: 61,009.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,649.41 : 135,927.38 = 40,686.68 : x
  2. Step 2: Convert to fraction form
    90,649.41/135,927.38 = 40,686.68/x
  3. Step 3: Cross multiply
    90,649.41x = 135,927.38 × 40,686.68
  4. Step 4: Simplify right side
    90,649.41x = 5,530,433,813.30
  5. Step 5: Solve for x
    x = 5,530,433,813.30/90,649.41
  6. Step 6: Final answer
    x = 61,009.04

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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.