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Finding the Fourth Proportional to 68,473.70, 102,710.55 and 57,976.10

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Solution

The fourth proportional to 68,473.70, 102,710.55 and 57,976.10 is: 86,964.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,473.70 : 102,710.55 = 57,976.10 : x
  2. Step 2: Convert to fraction form
    68,473.70/102,710.55 = 57,976.10/x
  3. Step 3: Cross multiply
    68,473.70x = 102,710.55 × 57,976.10
  4. Step 4: Simplify right side
    68,473.70x = 5,954,757,117.86
  5. Step 5: Solve for x
    x = 5,954,757,117.86/68,473.70
  6. Step 6: Final answer
    x = 86,964.15

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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.