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Finding the Fourth Proportional to 72,336.75, 108,504.01 and 19,746.08

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Solution

The fourth proportional to 72,336.75, 108,504.01 and 19,746.08 is: 29,618.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,336.75 : 108,504.01 = 19,746.08 : x
  2. Step 2: Convert to fraction form
    72,336.75/108,504.01 = 19,746.08/x
  3. Step 3: Cross multiply
    72,336.75x = 108,504.01 × 19,746.08
  4. Step 4: Simplify right side
    72,336.75x = 2,142,528,763.05
  5. Step 5: Solve for x
    x = 2,142,528,763.05/72,336.75
  6. Step 6: Final answer
    x = 29,618.81

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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.