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Finding the Fourth Proportional to 86,379.70, 119,163.25 and 50,547.53

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Solution

The fourth proportional to 86,379.70, 119,163.25 and 50,547.53 is: 69,731.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,379.70 : 119,163.25 = 50,547.53 : x
  2. Step 2: Convert to fraction form
    86,379.70/119,163.25 = 50,547.53/x
  3. Step 3: Cross multiply
    86,379.70x = 119,163.25 × 50,547.53
  4. Step 4: Simplify right side
    86,379.70x = 6,023,407,954.27
  5. Step 5: Solve for x
    x = 6,023,407,954.27/86,379.70
  6. Step 6: Final answer
    x = 69,731.75

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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.