Home / 90,649.16-135,927.01-40,686.43

Finding the Fourth Proportional to 90,649.16, 135,927.01 and 40,686.43

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Solution

The fourth proportional to 90,649.16, 135,927.01 and 40,686.43 is: 61,008.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,649.16 : 135,927.01 = 40,686.43 : x
  2. Step 2: Convert to fraction form
    90,649.16/135,927.01 = 40,686.43/x
  3. Step 3: Cross multiply
    90,649.16x = 135,927.01 × 40,686.43
  4. Step 4: Simplify right side
    90,649.16x = 5,530,384,777.47
  5. Step 5: Solve for x
    x = 5,530,384,777.47/90,649.16
  6. Step 6: Final answer
    x = 61,008.67

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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.