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Finding the Fourth Proportional to 71,670.98, 107,511.55 and 21,755.14

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Solution

The fourth proportional to 71,670.98, 107,511.55 and 21,755.14 is: 32,634.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,670.98 : 107,511.55 = 21,755.14 : x
  2. Step 2: Convert to fraction form
    71,670.98/107,511.55 = 21,755.14/x
  3. Step 3: Cross multiply
    71,670.98x = 107,511.55 × 21,755.14
  4. Step 4: Simplify right side
    71,670.98x = 2,338,928,498.70
  5. Step 5: Solve for x
    x = 2,338,928,498.70/71,670.98
  6. Step 6: Final answer
    x = 32,634.25

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1.5x scale

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.