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Finding the Fourth Proportional to 104,817.40, 144,625.62 and 66,589

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Solution

The fourth proportional to 104,817.40, 144,625.62 and 66,589 is: 91,878.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,817.40 : 144,625.62 = 66,589 : x
  2. Step 2: Convert to fraction form
    104,817.40/144,625.62 = 66,589/x
  3. Step 3: Cross multiply
    104,817.40x = 144,625.62 × 66,589
  4. Step 4: Simplify right side
    104,817.40x = 9,630,475,410.18
  5. Step 5: Solve for x
    x = 9,630,475,410.18/104,817.40
  6. Step 6: Final answer
    x = 91,878.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.