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Finding the Fourth Proportional to 84,676.75, 127,015.19 and 21,501.61

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Solution

The fourth proportional to 84,676.75, 127,015.19 and 21,501.61 is: 32,252.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,676.75 : 127,015.19 = 21,501.61 : x
  2. Step 2: Convert to fraction form
    84,676.75/127,015.19 = 21,501.61/x
  3. Step 3: Cross multiply
    84,676.75x = 127,015.19 × 21,501.61
  4. Step 4: Simplify right side
    84,676.75x = 2,731,031,289.49
  5. Step 5: Solve for x
    x = 2,731,031,289.49/84,676.75
  6. Step 6: Final answer
    x = 32,252.43

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1.5x scale

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.