Home / 74,768.80-103,179.62-40,777.54

Finding the Fourth Proportional to 74,768.80, 103,179.62 and 40,777.54

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Solution

The fourth proportional to 74,768.80, 103,179.62 and 40,777.54 is: 56,272.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,768.80 : 103,179.62 = 40,777.54 : x
  2. Step 2: Convert to fraction form
    74,768.80/103,179.62 = 40,777.54/x
  3. Step 3: Cross multiply
    74,768.80x = 103,179.62 × 40,777.54
  4. Step 4: Simplify right side
    74,768.80x = 4,207,411,081.73
  5. Step 5: Solve for x
    x = 4,207,411,081.73/74,768.80
  6. Step 6: Final answer
    x = 56,272.28

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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.