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Finding the Fourth Proportional to 45,990.27, 68,974.47 and 12,709.60

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Solution

The fourth proportional to 45,990.27, 68,974.47 and 12,709.60 is: 19,061.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,990.27 : 68,974.47 = 12,709.60 : x
  2. Step 2: Convert to fraction form
    45,990.27/68,974.47 = 12,709.60/x
  3. Step 3: Cross multiply
    45,990.27x = 68,974.47 × 12,709.60
  4. Step 4: Simplify right side
    45,990.27x = 876,637,751.48
  5. Step 5: Solve for x
    x = 876,637,751.48/45,990.27
  6. Step 6: Final answer
    x = 19,061.37

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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.