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Finding the Fourth Proportional to 111,935.44, 154,470.76 and 61,634

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Solution

The fourth proportional to 111,935.44, 154,470.76 and 61,634 is: 85,054.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,935.44 : 154,470.76 = 61,634 : x
  2. Step 2: Convert to fraction form
    111,935.44/154,470.76 = 61,634/x
  3. Step 3: Cross multiply
    111,935.44x = 154,470.76 × 61,634
  4. Step 4: Simplify right side
    111,935.44x = 9,520,650,821.84
  5. Step 5: Solve for x
    x = 9,520,650,821.84/111,935.44
  6. Step 6: Final answer
    x = 85,054.84

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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.