Home / 86,245.18-118,974.80-50,411.78

Finding the Fourth Proportional to 86,245.18, 118,974.80 and 50,411.78

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Solution

The fourth proportional to 86,245.18, 118,974.80 and 50,411.78 is: 69,542.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,245.18 : 118,974.80 = 50,411.78 : x
  2. Step 2: Convert to fraction form
    86,245.18/118,974.80 = 50,411.78/x
  3. Step 3: Cross multiply
    86,245.18x = 118,974.80 × 50,411.78
  4. Step 4: Simplify right side
    86,245.18x = 5,997,731,443.14
  5. Step 5: Solve for x
    x = 5,997,731,443.14/86,245.18
  6. Step 6: Final answer
    x = 69,542.80

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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.