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Finding the Fourth Proportional to 111,943.49, 154,473.48 and 63,539.71

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Solution

The fourth proportional to 111,943.49, 154,473.48 and 63,539.71 is: 87,679.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,943.49 : 154,473.48 = 63,539.71 : x
  2. Step 2: Convert to fraction form
    111,943.49/154,473.48 = 63,539.71/x
  3. Step 3: Cross multiply
    111,943.49x = 154,473.48 × 63,539.71
  4. Step 4: Simplify right side
    111,943.49x = 9,815,199,735.71
  5. Step 5: Solve for x
    x = 9,815,199,735.71/111,943.49
  6. Step 6: Final answer
    x = 87,679.96

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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.