Home / 81,746.32-122,629.08-29,163.28

Finding the Fourth Proportional to 81,746.32, 122,629.08 and 29,163.28

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Solution

The fourth proportional to 81,746.32, 122,629.08 and 29,163.28 is: 43,748.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,746.32 : 122,629.08 = 29,163.28 : x
  2. Step 2: Convert to fraction form
    81,746.32/122,629.08 = 29,163.28/x
  3. Step 3: Cross multiply
    81,746.32x = 122,629.08 × 29,163.28
  4. Step 4: Simplify right side
    81,746.32x = 3,576,266,196.18
  5. Step 5: Solve for x
    x = 3,576,266,196.18/81,746.32
  6. Step 6: Final answer
    x = 43,748.34

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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.