Home / 39,310.26-54,301.23-31,407.90

Finding the Fourth Proportional to 39,310.26, 54,301.23 and 31,407.90

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Solution

The fourth proportional to 39,310.26, 54,301.23 and 31,407.90 is: 43,385.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,310.26 : 54,301.23 = 31,407.90 : x
  2. Step 2: Convert to fraction form
    39,310.26/54,301.23 = 31,407.90/x
  3. Step 3: Cross multiply
    39,310.26x = 54,301.23 × 31,407.90
  4. Step 4: Simplify right side
    39,310.26x = 1,705,487,601.72
  5. Step 5: Solve for x
    x = 1,705,487,601.72/39,310.26
  6. Step 6: Final answer
    x = 43,385.30

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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.