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Finding the Fourth Proportional to 45,569, 68,356.06 and 12,739.56

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Solution

The fourth proportional to 45,569, 68,356.06 and 12,739.56 is: 19,110.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,569 : 68,356.06 = 12,739.56 : x
  2. Step 2: Convert to fraction form
    45,569/68,356.06 = 12,739.56/x
  3. Step 3: Cross multiply
    45,569x = 68,356.06 × 12,739.56
  4. Step 4: Simplify right side
    45,569x = 870,826,127.73
  5. Step 5: Solve for x
    x = 870,826,127.73/45,569
  6. Step 6: Final answer
    x = 19,110.06

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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.