Home / 40,195.08-55,457.89-31,670.78

Finding the Fourth Proportional to 40,195.08, 55,457.89 and 31,670.78

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Solution

The fourth proportional to 40,195.08, 55,457.89 and 31,670.78 is: 43,696.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,195.08 : 55,457.89 = 31,670.78 : x
  2. Step 2: Convert to fraction form
    40,195.08/55,457.89 = 31,670.78/x
  3. Step 3: Cross multiply
    40,195.08x = 55,457.89 × 31,670.78
  4. Step 4: Simplify right side
    40,195.08x = 1,756,394,633.45
  5. Step 5: Solve for x
    x = 1,756,394,633.45/40,195.08
  6. Step 6: Final answer
    x = 43,696.76

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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.