Home / 81,772.56-122,706.42-34,384.22

Finding the Fourth Proportional to 81,772.56, 122,706.42 and 34,384.22

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Solution

The fourth proportional to 81,772.56, 122,706.42 and 34,384.22 is: 51,596.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,772.56 : 122,706.42 = 34,384.22 : x
  2. Step 2: Convert to fraction form
    81,772.56/122,706.42 = 34,384.22/x
  3. Step 3: Cross multiply
    81,772.56x = 122,706.42 × 34,384.22
  4. Step 4: Simplify right side
    81,772.56x = 4,219,163,927.16
  5. Step 5: Solve for x
    x = 4,219,163,927.16/81,772.56
  6. Step 6: Final answer
    x = 51,596.33

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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.