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Finding the Fourth Proportional to 66,741.40, 100,112.10 and 40,497.40

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Solution

The fourth proportional to 66,741.40, 100,112.10 and 40,497.40 is: 60,746.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,741.40 : 100,112.10 = 40,497.40 : x
  2. Step 2: Convert to fraction form
    66,741.40/100,112.10 = 40,497.40/x
  3. Step 3: Cross multiply
    66,741.40x = 100,112.10 × 40,497.40
  4. Step 4: Simplify right side
    66,741.40x = 4,054,279,758.54
  5. Step 5: Solve for x
    x = 4,054,279,758.54/66,741.40
  6. Step 6: Final answer
    x = 60,746.10

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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.