Home / 51,916.68-77,878.80-18,640.80

Finding the Fourth Proportional to 51,916.68, 77,878.80 and 18,640.80

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Solution

The fourth proportional to 51,916.68, 77,878.80 and 18,640.80 is: 27,962.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,916.68 : 77,878.80 = 18,640.80 : x
  2. Step 2: Convert to fraction form
    51,916.68/77,878.80 = 18,640.80/x
  3. Step 3: Cross multiply
    51,916.68x = 77,878.80 × 18,640.80
  4. Step 4: Simplify right side
    51,916.68x = 1,451,723,135.04
  5. Step 5: Solve for x
    x = 1,451,723,135.04/51,916.68
  6. Step 6: Final answer
    x = 27,962.56

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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.