Home / 90,649.07-135,926.91-40,686.33

Finding the Fourth Proportional to 90,649.07, 135,926.91 and 40,686.33

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Solution

The fourth proportional to 90,649.07, 135,926.91 and 40,686.33 is: 61,008.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,649.07 : 135,926.91 = 40,686.33 : x
  2. Step 2: Convert to fraction form
    90,649.07/135,926.91 = 40,686.33/x
  3. Step 3: Cross multiply
    90,649.07x = 135,926.91 × 40,686.33
  4. Step 4: Simplify right side
    90,649.07x = 5,530,367,116.14
  5. Step 5: Solve for x
    x = 5,530,367,116.14/90,649.07
  6. Step 6: Final answer
    x = 61,008.54

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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.