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Finding the Fourth Proportional to 84,758.45, 127,086.94 and 28,597.32

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Solution

The fourth proportional to 84,758.45, 127,086.94 and 28,597.32 is: 42,878.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,758.45 : 127,086.94 = 28,597.32 : x
  2. Step 2: Convert to fraction form
    84,758.45/127,086.94 = 28,597.32/x
  3. Step 3: Cross multiply
    84,758.45x = 127,086.94 × 28,597.32
  4. Step 4: Simplify right side
    84,758.45x = 3,634,345,891.00
  5. Step 5: Solve for x
    x = 3,634,345,891.00/84,758.45
  6. Step 6: Final answer
    x = 42,878.86

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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.