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Finding the Fourth Proportional to 104,643.62, 156,961.95 and 45,479.36

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Solution

The fourth proportional to 104,643.62, 156,961.95 and 45,479.36 is: 68,217.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,643.62 : 156,961.95 = 45,479.36 : x
  2. Step 2: Convert to fraction form
    104,643.62/156,961.95 = 45,479.36/x
  3. Step 3: Cross multiply
    104,643.62x = 156,961.95 × 45,479.36
  4. Step 4: Simplify right side
    104,643.62x = 7,138,529,030.35
  5. Step 5: Solve for x
    x = 7,138,529,030.35/104,643.62
  6. Step 6: Final answer
    x = 68,217.53

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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.