Home / 81,512,609.60-122,268,914.40-54,302,830.40

Finding the Fourth Proportional to 81,512,609.60, 122,268,914.40 and 54,302,830.40

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Solution

The fourth proportional to 81,512,609.60, 122,268,914.40 and 54,302,830.40 is: 81,454,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,512,609.60 : 122,268,914.40 = 54,302,830.40 : x
  2. Step 2: Convert to fraction form
    81,512,609.60/122,268,914.40 = 54,302,830.40/x
  3. Step 3: Cross multiply
    81,512,609.60x = 122,268,914.40 × 54,302,830.40
  4. Step 4: Simplify right side
    81,512,609.60x = 6,639,548,121,855,318
  5. Step 5: Solve for x
    x = 6,639,548,121,855,318/81,512,609.60
  6. Step 6: Final answer
    x = 81,454,245.60

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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.