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Finding the Fourth Proportional to 105,804.25, 158,715.69 and 39,245.11

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Solution

The fourth proportional to 105,804.25, 158,715.69 and 39,245.11 is: 58,871.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,804.25 : 158,715.69 = 39,245.11 : x
  2. Step 2: Convert to fraction form
    105,804.25/158,715.69 = 39,245.11/x
  3. Step 3: Cross multiply
    105,804.25x = 158,715.69 × 39,245.11
  4. Step 4: Simplify right side
    105,804.25x = 6,228,814,712.78
  5. Step 5: Solve for x
    x = 6,228,814,712.78/105,804.25
  6. Step 6: Final answer
    x = 58,871.12

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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.