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Finding the Fourth Proportional to 71,886.56, 99,202.80 and 40,054.88

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Solution

The fourth proportional to 71,886.56, 99,202.80 and 40,054.88 is: 55,275.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,886.56 : 99,202.80 = 40,054.88 : x
  2. Step 2: Convert to fraction form
    71,886.56/99,202.80 = 40,054.88/x
  3. Step 3: Cross multiply
    71,886.56x = 99,202.80 × 40,054.88
  4. Step 4: Simplify right side
    71,886.56x = 3,973,556,249.66
  5. Step 5: Solve for x
    x = 3,973,556,249.66/71,886.56
  6. Step 6: Final answer
    x = 55,275.37

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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.