Home / 40,202.36-55,415.18-31,690.61

Finding the Fourth Proportional to 40,202.36, 55,415.18 and 31,690.61

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Solution

The fourth proportional to 40,202.36, 55,415.18 and 31,690.61 is: 43,682.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,202.36 : 55,415.18 = 31,690.61 : x
  2. Step 2: Convert to fraction form
    40,202.36/55,415.18 = 31,690.61/x
  3. Step 3: Cross multiply
    40,202.36x = 55,415.18 × 31,690.61
  4. Step 4: Simplify right side
    40,202.36x = 1,756,140,699.01
  5. Step 5: Solve for x
    x = 1,756,140,699.01/40,202.36
  6. Step 6: Final answer
    x = 43,682.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.