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Finding the Fourth Proportional to 40,381.44, 60,574.59 and 12,679.44

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Solution

The fourth proportional to 40,381.44, 60,574.59 and 12,679.44 is: 19,019.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,381.44 : 60,574.59 = 12,679.44 : x
  2. Step 2: Convert to fraction form
    40,381.44/60,574.59 = 12,679.44/x
  3. Step 3: Cross multiply
    40,381.44x = 60,574.59 × 12,679.44
  4. Step 4: Simplify right side
    40,381.44x = 768,051,816.03
  5. Step 5: Solve for x
    x = 768,051,816.03/40,381.44
  6. Step 6: Final answer
    x = 19,019.92

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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.