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Finding the Fourth Proportional to 69,865.76, 104,741.16 and 39,846.32

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Solution

The fourth proportional to 69,865.76, 104,741.16 and 39,846.32 is: 59,736.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,865.76 : 104,741.16 = 39,846.32 : x
  2. Step 2: Convert to fraction form
    69,865.76/104,741.16 = 39,846.32/x
  3. Step 3: Cross multiply
    69,865.76x = 104,741.16 × 39,846.32
  4. Step 4: Simplify right side
    69,865.76x = 4,173,549,778.53
  5. Step 5: Solve for x
    x = 4,173,549,778.53/69,865.76
  6. Step 6: Final answer
    x = 59,736.70

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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.