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Finding the Fourth Proportional to 85,908, 118,604.88 and 56,151.84

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Solution

The fourth proportional to 85,908, 118,604.88 and 56,151.84 is: 77,523.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,908 : 118,604.88 = 56,151.84 : x
  2. Step 2: Convert to fraction form
    85,908/118,604.88 = 56,151.84/x
  3. Step 3: Cross multiply
    85,908x = 118,604.88 × 56,151.84
  4. Step 4: Simplify right side
    85,908x = 6,659,882,244.98
  5. Step 5: Solve for x
    x = 6,659,882,244.98/85,908
  6. Step 6: Final answer
    x = 77,523.42

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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.