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Finding the Fourth Proportional to 40,460.50, 60,690.75 and 12,758.50

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Solution

The fourth proportional to 40,460.50, 60,690.75 and 12,758.50 is: 19,137.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,460.50 : 60,690.75 = 12,758.50 : x
  2. Step 2: Convert to fraction form
    40,460.50/60,690.75 = 12,758.50/x
  3. Step 3: Cross multiply
    40,460.50x = 60,690.75 × 12,758.50
  4. Step 4: Simplify right side
    40,460.50x = 774,322,933.88
  5. Step 5: Solve for x
    x = 774,322,933.88/40,460.50
  6. Step 6: Final answer
    x = 19,137.75

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1.5x scale

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.