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Finding the Fourth Proportional to 71,897.39, 107,846.34 and 21,977.29

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Solution

The fourth proportional to 71,897.39, 107,846.34 and 21,977.29 is: 32,966.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,897.39 : 107,846.34 = 21,977.29 : x
  2. Step 2: Convert to fraction form
    71,897.39/107,846.34 = 21,977.29/x
  3. Step 3: Cross multiply
    71,897.39x = 107,846.34 × 21,977.29
  4. Step 4: Simplify right side
    71,897.39x = 2,370,170,074.95
  5. Step 5: Solve for x
    x = 2,370,170,074.95/71,897.39
  6. Step 6: Final answer
    x = 32,966.01

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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.