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Finding the Fourth Proportional to 70,896.03, 106,307.25 and 20,969.56

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Solution

The fourth proportional to 70,896.03, 106,307.25 and 20,969.56 is: 31,443.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,896.03 : 106,307.25 = 20,969.56 : x
  2. Step 2: Convert to fraction form
    70,896.03/106,307.25 = 20,969.56/x
  3. Step 3: Cross multiply
    70,896.03x = 106,307.25 × 20,969.56
  4. Step 4: Simplify right side
    70,896.03x = 2,229,216,257.31
  5. Step 5: Solve for x
    x = 2,229,216,257.31/70,896.03
  6. Step 6: Final answer
    x = 31,443.46

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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.