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Finding the Fourth Proportional to 70,825.93, 106,214.13 and 20,892.77

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Solution

The fourth proportional to 70,825.93, 106,214.13 and 20,892.77 is: 31,331.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,825.93 : 106,214.13 = 20,892.77 : x
  2. Step 2: Convert to fraction form
    70,825.93/106,214.13 = 20,892.77/x
  3. Step 3: Cross multiply
    70,825.93x = 106,214.13 × 20,892.77
  4. Step 4: Simplify right side
    70,825.93x = 2,219,107,732.72
  5. Step 5: Solve for x
    x = 2,219,107,732.72/70,825.93
  6. Step 6: Final answer
    x = 31,331.86

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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.