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Finding the Fourth Proportional to 84,917.08, 127,393.62 and 28,754.47

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Solution

The fourth proportional to 84,917.08, 127,393.62 and 28,754.47 is: 43,137.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,917.08 : 127,393.62 = 28,754.47 : x
  2. Step 2: Convert to fraction form
    84,917.08/127,393.62 = 28,754.47/x
  3. Step 3: Cross multiply
    84,917.08x = 127,393.62 × 28,754.47
  4. Step 4: Simplify right side
    84,917.08x = 3,663,136,024.48
  5. Step 5: Solve for x
    x = 3,663,136,024.48/84,917.08
  6. Step 6: Final answer
    x = 43,137.80

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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.