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Finding the Fourth Proportional to 73,701.80, 110,552.70 and 21,116.60

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Solution

The fourth proportional to 73,701.80, 110,552.70 and 21,116.60 is: 31,674.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,701.80 : 110,552.70 = 21,116.60 : x
  2. Step 2: Convert to fraction form
    73,701.80/110,552.70 = 21,116.60/x
  3. Step 3: Cross multiply
    73,701.80x = 110,552.70 × 21,116.60
  4. Step 4: Simplify right side
    73,701.80x = 2,334,497,144.82
  5. Step 5: Solve for x
    x = 2,334,497,144.82/73,701.80
  6. Step 6: Final answer
    x = 31,674.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.