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Finding the Fourth Proportional to 106,449.95, 159,700.60 and 39,890.67

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Solution

The fourth proportional to 106,449.95, 159,700.60 and 39,890.67 is: 59,845.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,449.95 : 159,700.60 = 39,890.67 : x
  2. Step 2: Convert to fraction form
    106,449.95/159,700.60 = 39,890.67/x
  3. Step 3: Cross multiply
    106,449.95x = 159,700.60 × 39,890.67
  4. Step 4: Simplify right side
    106,449.95x = 6,370,563,933.40
  5. Step 5: Solve for x
    x = 6,370,563,933.40/106,449.95
  6. Step 6: Final answer
    x = 59,845.63

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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.