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Finding the Fourth Proportional to 84,855.98, 127,297.74 and 28,699.52

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Solution

The fourth proportional to 84,855.98, 127,297.74 and 28,699.52 is: 43,053.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,855.98 : 127,297.74 = 28,699.52 : x
  2. Step 2: Convert to fraction form
    84,855.98/127,297.74 = 28,699.52/x
  3. Step 3: Cross multiply
    84,855.98x = 127,297.74 × 28,699.52
  4. Step 4: Simplify right side
    84,855.98x = 3,653,384,035.08
  5. Step 5: Solve for x
    x = 3,653,384,035.08/84,855.98
  6. Step 6: Final answer
    x = 43,053.94

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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.