Home / 77,143.60-115,732.32-32,808.28

Finding the Fourth Proportional to 77,143.60, 115,732.32 and 32,808.28

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Solution

The fourth proportional to 77,143.60, 115,732.32 and 32,808.28 is: 49,219.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,143.60 : 115,732.32 = 32,808.28 : x
  2. Step 2: Convert to fraction form
    77,143.60/115,732.32 = 32,808.28/x
  3. Step 3: Cross multiply
    77,143.60x = 115,732.32 × 32,808.28
  4. Step 4: Simplify right side
    77,143.60x = 3,796,978,359.61
  5. Step 5: Solve for x
    x = 3,796,978,359.61/77,143.60
  6. Step 6: Final answer
    x = 49,219.62

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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.