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Finding the Fourth Proportional to 71,054.36, 98,049.70 and 40,839.76

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Solution

The fourth proportional to 71,054.36, 98,049.70 and 40,839.76 is: 56,355.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,054.36 : 98,049.70 = 40,839.76 : x
  2. Step 2: Convert to fraction form
    71,054.36/98,049.70 = 40,839.76/x
  3. Step 3: Cross multiply
    71,054.36x = 98,049.70 × 40,839.76
  4. Step 4: Simplify right side
    71,054.36x = 4,004,326,216.07
  5. Step 5: Solve for x
    x = 4,004,326,216.07/71,054.36
  6. Step 6: Final answer
    x = 56,355.81

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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.