Home / 83,666.67-115,419.47-55,396.05

Finding the Fourth Proportional to 83,666.67, 115,419.47 and 55,396.05

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Solution

The fourth proportional to 83,666.67, 115,419.47 and 55,396.05 is: 76,419.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,666.67 : 115,419.47 = 55,396.05 : x
  2. Step 2: Convert to fraction form
    83,666.67/115,419.47 = 55,396.05/x
  3. Step 3: Cross multiply
    83,666.67x = 115,419.47 × 55,396.05
  4. Step 4: Simplify right side
    83,666.67x = 6,393,782,731.09
  5. Step 5: Solve for x
    x = 6,393,782,731.09/83,666.67
  6. Step 6: Final answer
    x = 76,419.71

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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.