Home / 86,326.45-129,317.44-68,587.14

Finding the Fourth Proportional to 86,326.45, 129,317.44 and 68,587.14

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Solution

The fourth proportional to 86,326.45, 129,317.44 and 68,587.14 is: 102,743.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,326.45 : 129,317.44 = 68,587.14 : x
  2. Step 2: Convert to fraction form
    86,326.45/129,317.44 = 68,587.14/x
  3. Step 3: Cross multiply
    86,326.45x = 129,317.44 × 68,587.14
  4. Step 4: Simplify right side
    86,326.45x = 8,869,513,361.72
  5. Step 5: Solve for x
    x = 8,869,513,361.72/86,326.45
  6. Step 6: Final answer
    x = 102,743.87

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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.