Home / 77,280.20-115,997.10-37,881.80

Finding the Fourth Proportional to 77,280.20, 115,997.10 and 37,881.80

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Solution

The fourth proportional to 77,280.20, 115,997.10 and 37,881.80 is: 56,860.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,280.20 : 115,997.10 = 37,881.80 : x
  2. Step 2: Convert to fraction form
    77,280.20/115,997.10 = 37,881.80/x
  3. Step 3: Cross multiply
    77,280.20x = 115,997.10 × 37,881.80
  4. Step 4: Simplify right side
    77,280.20x = 4,394,178,942.78
  5. Step 5: Solve for x
    x = 4,394,178,942.78/77,280.20
  6. Step 6: Final answer
    x = 56,860.35

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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.