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Finding the Fourth Proportional to 72,777.51, 109,192.97 and 30,668.19

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Solution

The fourth proportional to 72,777.51, 109,192.97 and 30,668.19 is: 46,013.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,777.51 : 109,192.97 = 30,668.19 : x
  2. Step 2: Convert to fraction form
    72,777.51/109,192.97 = 30,668.19/x
  3. Step 3: Cross multiply
    72,777.51x = 109,192.97 × 30,668.19
  4. Step 4: Simplify right side
    72,777.51x = 3,348,750,597.28
  5. Step 5: Solve for x
    x = 3,348,750,597.28/72,777.51
  6. Step 6: Final answer
    x = 46,013.54

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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.