Home / 86,325.45-129,315.94-68,586.14

Finding the Fourth Proportional to 86,325.45, 129,315.94 and 68,586.14

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Solution

The fourth proportional to 86,325.45, 129,315.94 and 68,586.14 is: 102,742.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,325.45 : 129,315.94 = 68,586.14 : x
  2. Step 2: Convert to fraction form
    86,325.45/129,315.94 = 68,586.14/x
  3. Step 3: Cross multiply
    86,325.45x = 129,315.94 × 68,586.14
  4. Step 4: Simplify right side
    86,325.45x = 8,869,281,702.69
  5. Step 5: Solve for x
    x = 8,869,281,702.69/86,325.45
  6. Step 6: Final answer
    x = 102,742.38

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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.