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Finding the Fourth Proportional to 69,101.58, 103,486.26 and 39,429.45

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Solution

The fourth proportional to 69,101.58, 103,486.26 and 39,429.45 is: 59,049.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,101.58 : 103,486.26 = 39,429.45 : x
  2. Step 2: Convert to fraction form
    69,101.58/103,486.26 = 39,429.45/x
  3. Step 3: Cross multiply
    69,101.58x = 103,486.26 × 39,429.45
  4. Step 4: Simplify right side
    69,101.58x = 4,080,406,314.36
  5. Step 5: Solve for x
    x = 4,080,406,314.36/69,101.58
  6. Step 6: Final answer
    x = 59,049.39

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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.