Home / 71,509,704.20-107,264,556.30-66,407,870.60

Finding the Fourth Proportional to 71,509,704.20, 107,264,556.30 and 66,407,870.60

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Solution

The fourth proportional to 71,509,704.20, 107,264,556.30 and 66,407,870.60 is: 99,611,805.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,509,704.20 : 107,264,556.30 = 66,407,870.60 : x
  2. Step 2: Convert to fraction form
    71,509,704.20/107,264,556.30 = 66,407,870.60/x
  3. Step 3: Cross multiply
    71,509,704.20x = 107,264,556.30 × 66,407,870.60
  4. Step 4: Simplify right side
    71,509,704.20x = 7,123,210,774,736,815
  5. Step 5: Solve for x
    x = 7,123,210,774,736,815/71,509,704.20
  6. Step 6: Final answer
    x = 99,611,805.90

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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.