Home / 81,638,703.22-122,458,223.31-76,650,243.70

Finding the Fourth Proportional to 81,638,703.22, 122,458,223.31 and 76,650,243.70

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Solution

The fourth proportional to 81,638,703.22, 122,458,223.31 and 76,650,243.70 is: 114,975,523.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,638,703.22 : 122,458,223.31 = 76,650,243.70 : x
  2. Step 2: Convert to fraction form
    81,638,703.22/122,458,223.31 = 76,650,243.70/x
  3. Step 3: Cross multiply
    81,638,703.22x = 122,458,223.31 × 76,650,243.70
  4. Step 4: Simplify right side
    81,638,703.22x = 9,386,452,659,780,522
  5. Step 5: Solve for x
    x = 9,386,452,659,780,522/81,638,703.22
  6. Step 6: Final answer
    x = 114,975,523.74

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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.