Home / 81,532.89-122,317.74-28,942.38

Finding the Fourth Proportional to 81,532.89, 122,317.74 and 28,942.38

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Solution

The fourth proportional to 81,532.89, 122,317.74 and 28,942.38 is: 43,420.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,532.89 : 122,317.74 = 28,942.38 : x
  2. Step 2: Convert to fraction form
    81,532.89/122,317.74 = 28,942.38/x
  3. Step 3: Cross multiply
    81,532.89x = 122,317.74 × 28,942.38
  4. Step 4: Simplify right side
    81,532.89x = 3,540,166,511.82
  5. Step 5: Solve for x
    x = 3,540,166,511.82/81,532.89
  6. Step 6: Final answer
    x = 43,420.10

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1.5x scale

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.