Home / 83,427.45-115,148.03-55,135.77

Finding the Fourth Proportional to 83,427.45, 115,148.03 and 55,135.77

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Solution

The fourth proportional to 83,427.45, 115,148.03 and 55,135.77 is: 76,099.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,427.45 : 115,148.03 = 55,135.77 : x
  2. Step 2: Convert to fraction form
    83,427.45/115,148.03 = 55,135.77/x
  3. Step 3: Cross multiply
    83,427.45x = 115,148.03 × 55,135.77
  4. Step 4: Simplify right side
    83,427.45x = 6,348,775,022.35
  5. Step 5: Solve for x
    x = 6,348,775,022.35/83,427.45
  6. Step 6: Final answer
    x = 76,099.35

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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.