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Finding the Fourth Proportional to 70,896.61, 106,344.61 and 20,977.02

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Solution

The fourth proportional to 70,896.61, 106,344.61 and 20,977.02 is: 31,465.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,896.61 : 106,344.61 = 20,977.02 : x
  2. Step 2: Convert to fraction form
    70,896.61/106,344.61 = 20,977.02/x
  3. Step 3: Cross multiply
    70,896.61x = 106,344.61 × 20,977.02
  4. Step 4: Simplify right side
    70,896.61x = 2,230,792,958.42
  5. Step 5: Solve for x
    x = 2,230,792,958.42/70,896.61
  6. Step 6: Final answer
    x = 31,465.44

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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.