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Finding the Fourth Proportional to 109,869, 164,705.76 and 39,732.72

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Solution

The fourth proportional to 109,869, 164,705.76 and 39,732.72 is: 59,563.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,869 : 164,705.76 = 39,732.72 : x
  2. Step 2: Convert to fraction form
    109,869/164,705.76 = 39,732.72/x
  3. Step 3: Cross multiply
    109,869x = 164,705.76 × 39,732.72
  4. Step 4: Simplify right side
    109,869x = 6,544,207,844.47
  5. Step 5: Solve for x
    x = 6,544,207,844.47/109,869
  6. Step 6: Final answer
    x = 59,563.73

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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.