Home / 49,131.79-67,812.80-31,223.29

Finding the Fourth Proportional to 49,131.79, 67,812.80 and 31,223.29

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Solution

The fourth proportional to 49,131.79, 67,812.80 and 31,223.29 is: 43,095.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,131.79 : 67,812.80 = 31,223.29 : x
  2. Step 2: Convert to fraction form
    49,131.79/67,812.80 = 31,223.29/x
  3. Step 3: Cross multiply
    49,131.79x = 67,812.80 × 31,223.29
  4. Step 4: Simplify right side
    49,131.79x = 2,117,338,720.11
  5. Step 5: Solve for x
    x = 2,117,338,720.11/49,131.79
  6. Step 6: Final answer
    x = 43,095.09

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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.