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Finding the Fourth Proportional to 53,975.97, 80,963.97 and 18,915.63

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Solution

The fourth proportional to 53,975.97, 80,963.97 and 18,915.63 is: 28,373.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,975.97 : 80,963.97 = 18,915.63 : x
  2. Step 2: Convert to fraction form
    53,975.97/80,963.97 = 18,915.63/x
  3. Step 3: Cross multiply
    53,975.97x = 80,963.97 × 18,915.63
  4. Step 4: Simplify right side
    53,975.97x = 1,531,484,499.85
  5. Step 5: Solve for x
    x = 1,531,484,499.85/53,975.97
  6. Step 6: Final answer
    x = 28,373.45

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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.