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Finding the Fourth Proportional to 86,776.63, 119,716.42 and 56,550.94

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Solution

The fourth proportional to 86,776.63, 119,716.42 and 56,550.94 is: 78,017.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,776.63 : 119,716.42 = 56,550.94 : x
  2. Step 2: Convert to fraction form
    86,776.63/119,716.42 = 56,550.94/x
  3. Step 3: Cross multiply
    86,776.63x = 119,716.42 × 56,550.94
  4. Step 4: Simplify right side
    86,776.63x = 6,770,076,084.43
  5. Step 5: Solve for x
    x = 6,770,076,084.43/86,776.63
  6. Step 6: Final answer
    x = 78,017.27

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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.