Home / 81,551,513.20-122,327,269.80-45,271,807.60

Finding the Fourth Proportional to 81,551,513.20, 122,327,269.80 and 45,271,807.60

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Solution

The fourth proportional to 81,551,513.20, 122,327,269.80 and 45,271,807.60 is: 67,907,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,551,513.20 : 122,327,269.80 = 45,271,807.60 : x
  2. Step 2: Convert to fraction form
    81,551,513.20/122,327,269.80 = 45,271,807.60/x
  3. Step 3: Cross multiply
    81,551,513.20x = 122,327,269.80 × 45,271,807.60
  4. Step 4: Simplify right side
    81,551,513.20x = 5,537,976,622,618,891
  5. Step 5: Solve for x
    x = 5,537,976,622,618,891/81,551,513.20
  6. Step 6: Final answer
    x = 67,907,711.40

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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.