Home / 76,270.20-105,252.12-43,992.78

Finding the Fourth Proportional to 76,270.20, 105,252.12 and 43,992.78

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Solution

The fourth proportional to 76,270.20, 105,252.12 and 43,992.78 is: 60,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,270.20 : 105,252.12 = 43,992.78 : x
  2. Step 2: Convert to fraction form
    76,270.20/105,252.12 = 43,992.78/x
  3. Step 3: Cross multiply
    76,270.20x = 105,252.12 × 43,992.78
  4. Step 4: Simplify right side
    76,270.20x = 4,630,333,359.69
  5. Step 5: Solve for x
    x = 4,630,333,359.69/76,270.20
  6. Step 6: Final answer
    x = 60,709.60

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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.