Home / 81,873.48-122,733.54-74,569.44

Finding the Fourth Proportional to 81,873.48, 122,733.54 and 74,569.44

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Solution

The fourth proportional to 81,873.48, 122,733.54 and 74,569.44 is: 111,784.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,873.48 : 122,733.54 = 74,569.44 : x
  2. Step 2: Convert to fraction form
    81,873.48/122,733.54 = 74,569.44/x
  3. Step 3: Cross multiply
    81,873.48x = 122,733.54 × 74,569.44
  4. Step 4: Simplify right side
    81,873.48x = 9,152,171,347.02
  5. Step 5: Solve for x
    x = 9,152,171,347.02/81,873.48
  6. Step 6: Final answer
    x = 111,784.32

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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.