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Finding the Fourth Proportional to 51,255, 70,732.44 and 28,899

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Solution

The fourth proportional to 51,255, 70,732.44 and 28,899 is: 39,880.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,255 : 70,732.44 = 28,899 : x
  2. Step 2: Convert to fraction form
    51,255/70,732.44 = 28,899/x
  3. Step 3: Cross multiply
    51,255x = 70,732.44 × 28,899
  4. Step 4: Simplify right side
    51,255x = 2,044,096,783.56
  5. Step 5: Solve for x
    x = 2,044,096,783.56/51,255
  6. Step 6: Final answer
    x = 39,880.92

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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.