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Finding the Fourth Proportional to 109,994.40, 165,036.24 and 39,879.36

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Solution

The fourth proportional to 109,994.40, 165,036.24 and 39,879.36 is: 59,835.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,994.40 : 165,036.24 = 39,879.36 : x
  2. Step 2: Convert to fraction form
    109,994.40/165,036.24 = 39,879.36/x
  3. Step 3: Cross multiply
    109,994.40x = 165,036.24 × 39,879.36
  4. Step 4: Simplify right side
    109,994.40x = 6,581,539,628.01
  5. Step 5: Solve for x
    x = 6,581,539,628.01/109,994.40
  6. Step 6: Final answer
    x = 59,835.22

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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.