Home / 83,712.22-115,553.19-55,427.02

Finding the Fourth Proportional to 83,712.22, 115,553.19 and 55,427.02

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Solution

The fourth proportional to 83,712.22, 115,553.19 and 55,427.02 is: 76,509.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,712.22 : 115,553.19 = 55,427.02 : x
  2. Step 2: Convert to fraction form
    83,712.22/115,553.19 = 55,427.02/x
  3. Step 3: Cross multiply
    83,712.22x = 115,553.19 × 55,427.02
  4. Step 4: Simplify right side
    83,712.22x = 6,404,768,973.19
  5. Step 5: Solve for x
    x = 6,404,768,973.19/83,712.22
  6. Step 6: Final answer
    x = 76,509.37

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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.