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Finding the Fourth Proportional to 51,999.94, 71,760.12 and 28,126.78

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Solution

The fourth proportional to 51,999.94, 71,760.12 and 28,126.78 is: 38,815.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,999.94 : 71,760.12 = 28,126.78 : x
  2. Step 2: Convert to fraction form
    51,999.94/71,760.12 = 28,126.78/x
  3. Step 3: Cross multiply
    51,999.94x = 71,760.12 × 28,126.78
  4. Step 4: Simplify right side
    51,999.94x = 2,018,381,108.01
  5. Step 5: Solve for x
    x = 2,018,381,108.01/51,999.94
  6. Step 6: Final answer
    x = 38,815.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.