Home / 76,721.81-115,143.45-32,379.17

Finding the Fourth Proportional to 76,721.81, 115,143.45 and 32,379.17

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Solution

The fourth proportional to 76,721.81, 115,143.45 and 32,379.17 is: 48,594.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,721.81 : 115,143.45 = 32,379.17 : x
  2. Step 2: Convert to fraction form
    76,721.81/115,143.45 = 32,379.17/x
  3. Step 3: Cross multiply
    76,721.81x = 115,143.45 × 32,379.17
  4. Step 4: Simplify right side
    76,721.81x = 3,728,248,766.22
  5. Step 5: Solve for x
    x = 3,728,248,766.22/76,721.81
  6. Step 6: Final answer
    x = 48,594.38

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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.