Home / 86,461.49-129,691.32-22,419.30

Finding the Fourth Proportional to 86,461.49, 129,691.32 and 22,419.30

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Solution

The fourth proportional to 86,461.49, 129,691.32 and 22,419.30 is: 33,628.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,461.49 : 129,691.32 = 22,419.30 : x
  2. Step 2: Convert to fraction form
    86,461.49/129,691.32 = 22,419.30/x
  3. Step 3: Cross multiply
    86,461.49x = 129,691.32 × 22,419.30
  4. Step 4: Simplify right side
    86,461.49x = 2,907,588,610.48
  5. Step 5: Solve for x
    x = 2,907,588,610.48/86,461.49
  6. Step 6: Final answer
    x = 33,628.71

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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.