Home / 81,621.84-122,432.40-29,033.28

Finding the Fourth Proportional to 81,621.84, 122,432.40 and 29,033.28

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Solution

The fourth proportional to 81,621.84, 122,432.40 and 29,033.28 is: 43,549.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,621.84 : 122,432.40 = 29,033.28 : x
  2. Step 2: Convert to fraction form
    81,621.84/122,432.40 = 29,033.28/x
  3. Step 3: Cross multiply
    81,621.84x = 122,432.40 × 29,033.28
  4. Step 4: Simplify right side
    81,621.84x = 3,554,614,150.27
  5. Step 5: Solve for x
    x = 3,554,614,150.27/81,621.84
  6. Step 6: Final answer
    x = 43,549.79

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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.