Home / 66,508,873.20-99,744,647.40-21,084,591.60

Finding the Fourth Proportional to 66,508,873.20, 99,744,647.40 and 21,084,591.60

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Solution

The fourth proportional to 66,508,873.20, 99,744,647.40 and 21,084,591.60 is: 31,620,971.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,508,873.20 : 99,744,647.40 = 21,084,591.60 : x
  2. Step 2: Convert to fraction form
    66,508,873.20/99,744,647.40 = 21,084,591.60/x
  3. Step 3: Cross multiply
    66,508,873.20x = 99,744,647.40 × 21,084,591.60
  4. Step 4: Simplify right side
    66,508,873.20x = 2,103,075,154,715,002
  5. Step 5: Solve for x
    x = 2,103,075,154,715,002/66,508,873.20
  6. Step 6: Final answer
    x = 31,620,971.06

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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.