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Finding the Fourth Proportional to 66,889,740.70, 100,334,611.05 and 53,452,812.70

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Solution

The fourth proportional to 66,889,740.70, 100,334,611.05 and 53,452,812.70 is: 80,179,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,889,740.70 : 100,334,611.05 = 53,452,812.70 : x
  2. Step 2: Convert to fraction form
    66,889,740.70/100,334,611.05 = 53,452,812.70/x
  3. Step 3: Cross multiply
    66,889,740.70x = 100,334,611.05 × 53,452,812.70
  4. Step 4: Simplify right side
    66,889,740.70x = 5,363,167,171,783,000
  5. Step 5: Solve for x
    x = 5,363,167,171,783,000/66,889,740.70
  6. Step 6: Final answer
    x = 80,179,219.05

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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.