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Finding the Fourth Proportional to 84,704.90, 127,031.44 and 28,529.95

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Solution

The fourth proportional to 84,704.90, 127,031.44 and 28,529.95 is: 42,786.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,704.90 : 127,031.44 = 28,529.95 : x
  2. Step 2: Convert to fraction form
    84,704.90/127,031.44 = 28,529.95/x
  3. Step 3: Cross multiply
    84,704.90x = 127,031.44 × 28,529.95
  4. Step 4: Simplify right side
    84,704.90x = 3,624,200,177.13
  5. Step 5: Solve for x
    x = 3,624,200,177.13/84,704.90
  6. Step 6: Final answer
    x = 42,786.19

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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.