Home / 66,431,953.10-99,647,929.65-20,993,747.60

Finding the Fourth Proportional to 66,431,953.10, 99,647,929.65 and 20,993,747.60

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Solution

The fourth proportional to 66,431,953.10, 99,647,929.65 and 20,993,747.60 is: 31,490,621.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,431,953.10 : 99,647,929.65 = 20,993,747.60 : x
  2. Step 2: Convert to fraction form
    66,431,953.10/99,647,929.65 = 20,993,747.60/x
  3. Step 3: Cross multiply
    66,431,953.10x = 99,647,929.65 × 20,993,747.60
  4. Step 4: Simplify right side
    66,431,953.10x = 2,091,983,483,934,656.50
  5. Step 5: Solve for x
    x = 2,091,983,483,934,656.50/66,431,953.10
  6. Step 6: Final answer
    x = 31,490,621.40

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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.