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Finding the Fourth Proportional to 51,108.63, 76,662.89 and 14,172.63

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Solution

The fourth proportional to 51,108.63, 76,662.89 and 14,172.63 is: 21,258.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,108.63 : 76,662.89 = 14,172.63 : x
  2. Step 2: Convert to fraction form
    51,108.63/76,662.89 = 14,172.63/x
  3. Step 3: Cross multiply
    51,108.63x = 76,662.89 × 14,172.63
  4. Step 4: Simplify right side
    51,108.63x = 1,086,514,703.84
  5. Step 5: Solve for x
    x = 1,086,514,703.84/51,108.63
  6. Step 6: Final answer
    x = 21,258.93

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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.