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Finding the Fourth Proportional to 77,960.64, 116,911.94 and 28,027.11

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Solution

The fourth proportional to 77,960.64, 116,911.94 and 28,027.11 is: 42,030.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,960.64 : 116,911.94 = 28,027.11 : x
  2. Step 2: Convert to fraction form
    77,960.64/116,911.94 = 28,027.11/x
  3. Step 3: Cross multiply
    77,960.64x = 116,911.94 × 28,027.11
  4. Step 4: Simplify right side
    77,960.64x = 3,276,703,662.56
  5. Step 5: Solve for x
    x = 3,276,703,662.56/77,960.64
  6. Step 6: Final answer
    x = 42,030.23

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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.