Home / 81,919,244.32-122,780,888.86-38,140,986.40

Finding the Fourth Proportional to 81,919,244.32, 122,780,888.86 and 38,140,986.40

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Solution

The fourth proportional to 81,919,244.32, 122,780,888.86 and 38,140,986.40 is: 57,165,861.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,919,244.32 : 122,780,888.86 = 38,140,986.40 : x
  2. Step 2: Convert to fraction form
    81,919,244.32/122,780,888.86 = 38,140,986.40/x
  3. Step 3: Cross multiply
    81,919,244.32x = 122,780,888.86 × 38,140,986.40
  4. Step 4: Simplify right side
    81,919,244.32x = 4,682,984,212,189,171
  5. Step 5: Solve for x
    x = 4,682,984,212,189,171/81,919,244.32
  6. Step 6: Final answer
    x = 57,165,861.95

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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.