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Finding the Fourth Proportional to 68,728.91, 94,717.55 and 53,597.70

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Solution

The fourth proportional to 68,728.91, 94,717.55 and 53,597.70 is: 73,864.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,728.91 : 94,717.55 = 53,597.70 : x
  2. Step 2: Convert to fraction form
    68,728.91/94,717.55 = 53,597.70/x
  3. Step 3: Cross multiply
    68,728.91x = 94,717.55 × 53,597.70
  4. Step 4: Simplify right side
    68,728.91x = 5,076,642,963.63
  5. Step 5: Solve for x
    x = 5,076,642,963.63/68,728.91
  6. Step 6: Final answer
    x = 73,864.74

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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.