Home / 53,872.09-80,781.10-31,390.03

Finding the Fourth Proportional to 53,872.09, 80,781.10 and 31,390.03

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Solution

The fourth proportional to 53,872.09, 80,781.10 and 31,390.03 is: 47,069.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,872.09 : 80,781.10 = 31,390.03 : x
  2. Step 2: Convert to fraction form
    53,872.09/80,781.10 = 31,390.03/x
  3. Step 3: Cross multiply
    53,872.09x = 80,781.10 × 31,390.03
  4. Step 4: Simplify right side
    53,872.09x = 2,535,721,174.93
  5. Step 5: Solve for x
    x = 2,535,721,174.93/53,872.09
  6. Step 6: Final answer
    x = 47,069.29

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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.