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Finding the Fourth Proportional to 72,852.96, 109,285.63 and 20,262.45

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Solution

The fourth proportional to 72,852.96, 109,285.63 and 20,262.45 is: 30,395.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,852.96 : 109,285.63 = 20,262.45 : x
  2. Step 2: Convert to fraction form
    72,852.96/109,285.63 = 20,262.45/x
  3. Step 3: Cross multiply
    72,852.96x = 109,285.63 × 20,262.45
  4. Step 4: Simplify right side
    72,852.96x = 2,214,394,107.65
  5. Step 5: Solve for x
    x = 2,214,394,107.65/72,852.96
  6. Step 6: Final answer
    x = 30,395.39

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1.5x scale

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.