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Finding the Fourth Proportional to 84,682.45, 127,023.90 and 28,561.98

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Solution

The fourth proportional to 84,682.45, 127,023.90 and 28,561.98 is: 42,843.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,682.45 : 127,023.90 = 28,561.98 : x
  2. Step 2: Convert to fraction form
    84,682.45/127,023.90 = 28,561.98/x
  3. Step 3: Cross multiply
    84,682.45x = 127,023.90 × 28,561.98
  4. Step 4: Simplify right side
    84,682.45x = 3,628,054,091.32
  5. Step 5: Solve for x
    x = 3,628,054,091.32/84,682.45
  6. Step 6: Final answer
    x = 42,843.05

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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.