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Finding the Fourth Proportional to 54,085.61, 81,136.11 and 16,648.80

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Solution

The fourth proportional to 54,085.61, 81,136.11 and 16,648.80 is: 24,975.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,085.61 : 81,136.11 = 16,648.80 : x
  2. Step 2: Convert to fraction form
    54,085.61/81,136.11 = 16,648.80/x
  3. Step 3: Cross multiply
    54,085.61x = 81,136.11 × 16,648.80
  4. Step 4: Simplify right side
    54,085.61x = 1,350,819,056.35
  5. Step 5: Solve for x
    x = 1,350,819,056.35/54,085.61
  6. Step 6: Final answer
    x = 24,975.57

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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.