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Finding the Fourth Proportional to 51,005.75, 76,512.95 and 14,069.75

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Solution

The fourth proportional to 51,005.75, 76,512.95 and 14,069.75 is: 21,105.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,005.75 : 76,512.95 = 14,069.75 : x
  2. Step 2: Convert to fraction form
    51,005.75/76,512.95 = 14,069.75/x
  3. Step 3: Cross multiply
    51,005.75x = 76,512.95 × 14,069.75
  4. Step 4: Simplify right side
    51,005.75x = 1,076,518,007.91
  5. Step 5: Solve for x
    x = 1,076,518,007.91/51,005.75
  6. Step 6: Final answer
    x = 21,105.82

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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.