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Finding the Fourth Proportional to 109,987.30, 164,871.60 and 50,719.60

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Solution

The fourth proportional to 109,987.30, 164,871.60 and 50,719.60 is: 76,028.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,987.30 : 164,871.60 = 50,719.60 : x
  2. Step 2: Convert to fraction form
    109,987.30/164,871.60 = 50,719.60/x
  3. Step 3: Cross multiply
    109,987.30x = 164,871.60 × 50,719.60
  4. Step 4: Simplify right side
    109,987.30x = 8,362,221,603.36
  5. Step 5: Solve for x
    x = 8,362,221,603.36/109,987.30
  6. Step 6: Final answer
    x = 76,028.97

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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.