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Finding the Fourth Proportional to 104,323.86, 143,951.49 and 58,989.78

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Solution

The fourth proportional to 104,323.86, 143,951.49 and 58,989.78 is: 81,397.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,323.86 : 143,951.49 = 58,989.78 : x
  2. Step 2: Convert to fraction form
    104,323.86/143,951.49 = 58,989.78/x
  3. Step 3: Cross multiply
    104,323.86x = 143,951.49 × 58,989.78
  4. Step 4: Simplify right side
    104,323.86x = 8,491,666,725.77
  5. Step 5: Solve for x
    x = 8,491,666,725.77/104,323.86
  6. Step 6: Final answer
    x = 81,397.17

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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.