Home / 81,665.02-122,532.19-39,576.43

Finding the Fourth Proportional to 81,665.02, 122,532.19 and 39,576.43

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Solution

The fourth proportional to 81,665.02, 122,532.19 and 39,576.43 is: 59,381.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,665.02 : 122,532.19 = 39,576.43 : x
  2. Step 2: Convert to fraction form
    81,665.02/122,532.19 = 39,576.43/x
  3. Step 3: Cross multiply
    81,665.02x = 122,532.19 × 39,576.43
  4. Step 4: Simplify right side
    81,665.02x = 4,849,386,640.28
  5. Step 5: Solve for x
    x = 4,849,386,640.28/81,665.02
  6. Step 6: Final answer
    x = 59,381.44

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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.