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Finding the Fourth Proportional to 104,067, 143,612.46 and 56,320.70

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Solution

The fourth proportional to 104,067, 143,612.46 and 56,320.70 is: 77,722.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,067 : 143,612.46 = 56,320.70 : x
  2. Step 2: Convert to fraction form
    104,067/143,612.46 = 56,320.70/x
  3. Step 3: Cross multiply
    104,067x = 143,612.46 × 56,320.70
  4. Step 4: Simplify right side
    104,067x = 8,088,353,557.86
  5. Step 5: Solve for x
    x = 8,088,353,557.86/104,067
  6. Step 6: Final answer
    x = 77,722.56

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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.