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Finding the Fourth Proportional to 104,989.73, 144,886.50 and 57,243.87

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Solution

The fourth proportional to 104,989.73, 144,886.50 and 57,243.87 is: 78,996.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,989.73 : 144,886.50 = 57,243.87 : x
  2. Step 2: Convert to fraction form
    104,989.73/144,886.50 = 57,243.87/x
  3. Step 3: Cross multiply
    104,989.73x = 144,886.50 × 57,243.87
  4. Step 4: Simplify right side
    104,989.73x = 8,293,863,970.76
  5. Step 5: Solve for x
    x = 8,293,863,970.76/104,989.73
  6. Step 6: Final answer
    x = 78,996.91

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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.