Home / 81,828.47-122,728.75-22,650.28

Finding the Fourth Proportional to 81,828.47, 122,728.75 and 22,650.28

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Solution

The fourth proportional to 81,828.47, 122,728.75 and 22,650.28 is: 33,971.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,828.47 : 122,728.75 = 22,650.28 : x
  2. Step 2: Convert to fraction form
    81,828.47/122,728.75 = 22,650.28/x
  3. Step 3: Cross multiply
    81,828.47x = 122,728.75 × 22,650.28
  4. Step 4: Simplify right side
    81,828.47x = 2,779,840,551.55
  5. Step 5: Solve for x
    x = 2,779,840,551.55/81,828.47
  6. Step 6: Final answer
    x = 33,971.56

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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.