Home / 78,291.23-108,131.63-51,553.26

Finding the Fourth Proportional to 78,291.23, 108,131.63 and 51,553.26

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Solution

The fourth proportional to 78,291.23, 108,131.63 and 51,553.26 is: 71,202.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,291.23 : 108,131.63 = 51,553.26 : x
  2. Step 2: Convert to fraction form
    78,291.23/108,131.63 = 51,553.26/x
  3. Step 3: Cross multiply
    78,291.23x = 108,131.63 × 51,553.26
  4. Step 4: Simplify right side
    78,291.23x = 5,574,537,777.85
  5. Step 5: Solve for x
    x = 5,574,537,777.85/78,291.23
  6. Step 6: Final answer
    x = 71,202.59

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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.