Home / 76,395.30-114,590.43-31,415.10

Finding the Fourth Proportional to 76,395.30, 114,590.43 and 31,415.10

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Solution

The fourth proportional to 76,395.30, 114,590.43 and 31,415.10 is: 47,121.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,395.30 : 114,590.43 = 31,415.10 : x
  2. Step 2: Convert to fraction form
    76,395.30/114,590.43 = 31,415.10/x
  3. Step 3: Cross multiply
    76,395.30x = 114,590.43 × 31,415.10
  4. Step 4: Simplify right side
    76,395.30x = 3,599,869,817.49
  5. Step 5: Solve for x
    x = 3,599,869,817.49/76,395.30
  6. Step 6: Final answer
    x = 47,121.61

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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.