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Finding the Fourth Proportional to 29,055.56, 40,051.18 and 18,978.96

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Solution

The fourth proportional to 29,055.56, 40,051.18 and 18,978.96 is: 26,161.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,055.56 : 40,051.18 = 18,978.96 : x
  2. Step 2: Convert to fraction form
    29,055.56/40,051.18 = 18,978.96/x
  3. Step 3: Cross multiply
    29,055.56x = 40,051.18 × 18,978.96
  4. Step 4: Simplify right side
    29,055.56x = 760,129,745.18
  5. Step 5: Solve for x
    x = 760,129,745.18/29,055.56
  6. Step 6: Final answer
    x = 26,161.25

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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.