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Finding the Fourth Proportional to 78,967.07, 108,974.29 and 43,157.07

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Solution

The fourth proportional to 78,967.07, 108,974.29 and 43,157.07 is: 59,556.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,967.07 : 108,974.29 = 43,157.07 : x
  2. Step 2: Convert to fraction form
    78,967.07/108,974.29 = 43,157.07/x
  3. Step 3: Cross multiply
    78,967.07x = 108,974.29 × 43,157.07
  4. Step 4: Simplify right side
    78,967.07x = 4,703,010,953.84
  5. Step 5: Solve for x
    x = 4,703,010,953.84/78,967.07
  6. Step 6: Final answer
    x = 59,556.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.