Home / 71,022.31-106,529.78-21,102.82

Finding the Fourth Proportional to 71,022.31, 106,529.78 and 21,102.82

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Solution

The fourth proportional to 71,022.31, 106,529.78 and 21,102.82 is: 31,653.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,022.31 : 106,529.78 = 21,102.82 : x
  2. Step 2: Convert to fraction form
    71,022.31/106,529.78 = 21,102.82/x
  3. Step 3: Cross multiply
    71,022.31x = 106,529.78 × 21,102.82
  4. Step 4: Simplify right side
    71,022.31x = 2,248,078,558.41
  5. Step 5: Solve for x
    x = 2,248,078,558.41/71,022.31
  6. Step 6: Final answer
    x = 31,653.13

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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.