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Finding the Fourth Proportional to 81,653.40, 122,491.26 and 29,050.20

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Solution

The fourth proportional to 81,653.40, 122,491.26 and 29,050.20 is: 43,579.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,653.40 : 122,491.26 = 29,050.20 : x
  2. Step 2: Convert to fraction form
    81,653.40/122,491.26 = 29,050.20/x
  3. Step 3: Cross multiply
    81,653.40x = 122,491.26 × 29,050.20
  4. Step 4: Simplify right side
    81,653.40x = 3,558,395,601.25
  5. Step 5: Solve for x
    x = 3,558,395,601.25/81,653.40
  6. Step 6: Final answer
    x = 43,579.27

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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.