Home / 86,456.07-129,742.38-30,296.68

Finding the Fourth Proportional to 86,456.07, 129,742.38 and 30,296.68

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Solution

The fourth proportional to 86,456.07, 129,742.38 and 30,296.68 is: 45,465.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,456.07 : 129,742.38 = 30,296.68 : x
  2. Step 2: Convert to fraction form
    86,456.07/129,742.38 = 30,296.68/x
  3. Step 3: Cross multiply
    86,456.07x = 129,742.38 × 30,296.68
  4. Step 4: Simplify right side
    86,456.07x = 3,930,763,044.94
  5. Step 5: Solve for x
    x = 3,930,763,044.94/86,456.07
  6. Step 6: Final answer
    x = 45,465.44

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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.