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Finding the Fourth Proportional to 51,448.66, 77,175.99 and 19,858.89

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Solution

The fourth proportional to 51,448.66, 77,175.99 and 19,858.89 is: 29,789.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,448.66 : 77,175.99 = 19,858.89 : x
  2. Step 2: Convert to fraction form
    51,448.66/77,175.99 = 19,858.89/x
  3. Step 3: Cross multiply
    51,448.66x = 77,175.99 × 19,858.89
  4. Step 4: Simplify right side
    51,448.66x = 1,532,629,496.05
  5. Step 5: Solve for x
    x = 1,532,629,496.05/51,448.66
  6. Step 6: Final answer
    x = 29,789.49

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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.