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Finding the Fourth Proportional to 71,887.56, 99,204.18 and 40,055.88

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Solution

The fourth proportional to 71,887.56, 99,204.18 and 40,055.88 is: 55,276.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,887.56 : 99,204.18 = 40,055.88 : x
  2. Step 2: Convert to fraction form
    71,887.56/99,204.18 = 40,055.88/x
  3. Step 3: Cross multiply
    71,887.56x = 99,204.18 × 40,055.88
  4. Step 4: Simplify right side
    71,887.56x = 3,973,710,729.58
  5. Step 5: Solve for x
    x = 3,973,710,729.58/71,887.56
  6. Step 6: Final answer
    x = 55,276.75

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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.