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Finding the Fourth Proportional to 107,759.70, 161,639.44 and 28,871.77

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Solution

The fourth proportional to 107,759.70, 161,639.44 and 28,871.77 is: 43,307.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,759.70 : 161,639.44 = 28,871.77 : x
  2. Step 2: Convert to fraction form
    107,759.70/161,639.44 = 28,871.77/x
  3. Step 3: Cross multiply
    107,759.70x = 161,639.44 × 28,871.77
  4. Step 4: Simplify right side
    107,759.70x = 4,666,816,734.61
  5. Step 5: Solve for x
    x = 4,666,816,734.61/107,759.70
  6. Step 6: Final answer
    x = 43,307.63

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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.