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Finding the Fourth Proportional to 84,703.26, 127,034.34 and 28,528.86

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Solution

The fourth proportional to 84,703.26, 127,034.34 and 28,528.86 is: 42,786.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,703.26 : 127,034.34 = 28,528.86 : x
  2. Step 2: Convert to fraction form
    84,703.26/127,034.34 = 28,528.86/x
  3. Step 3: Cross multiply
    84,703.26x = 127,034.34 × 28,528.86
  4. Step 4: Simplify right side
    84,703.26x = 3,624,144,901.05
  5. Step 5: Solve for x
    x = 3,624,144,901.05/84,703.26
  6. Step 6: Final answer
    x = 42,786.37

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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.