Home / 81,639.01-122,429.26-29,038.02

Finding the Fourth Proportional to 81,639.01, 122,429.26 and 29,038.02

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Solution

The fourth proportional to 81,639.01, 122,429.26 and 29,038.02 is: 43,546.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,639.01 : 122,429.26 = 29,038.02 : x
  2. Step 2: Convert to fraction form
    81,639.01/122,429.26 = 29,038.02/x
  3. Step 3: Cross multiply
    81,639.01x = 122,429.26 × 29,038.02
  4. Step 4: Simplify right side
    81,639.01x = 3,555,103,300.47
  5. Step 5: Solve for x
    x = 3,555,103,300.47/81,639.01
  6. Step 6: Final answer
    x = 43,546.62

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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.