Home / 81,551,147.20-122,326,720.80-45,271,441.60

Finding the Fourth Proportional to 81,551,147.20, 122,326,720.80 and 45,271,441.60

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Solution

The fourth proportional to 81,551,147.20, 122,326,720.80 and 45,271,441.60 is: 67,907,162.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,551,147.20 : 122,326,720.80 = 45,271,441.60 : x
  2. Step 2: Convert to fraction form
    81,551,147.20/122,326,720.80 = 45,271,441.60/x
  3. Step 3: Cross multiply
    81,551,147.20x = 122,326,720.80 × 45,271,441.60
  4. Step 4: Simplify right side
    81,551,147.20x = 5,537,906,996,816,705
  5. Step 5: Solve for x
    x = 5,537,906,996,816,705/81,551,147.20
  6. Step 6: Final answer
    x = 67,907,162.40

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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.