Home / 81,569,458.44-122,352,987.06-20,158,613.78

Finding the Fourth Proportional to 81,569,458.44, 122,352,987.06 and 20,158,613.78

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Solution

The fourth proportional to 81,569,458.44, 122,352,987.06 and 20,158,613.78 is: 30,237,623.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,569,458.44 : 122,352,987.06 = 20,158,613.78 : x
  2. Step 2: Convert to fraction form
    81,569,458.44/122,352,987.06 = 20,158,613.78/x
  3. Step 3: Cross multiply
    81,569,458.44x = 122,352,987.06 × 20,158,613.78
  4. Step 4: Simplify right side
    81,569,458.44x = 2,466,466,610,360,112.50
  5. Step 5: Solve for x
    x = 2,466,466,610,360,112.50/81,569,458.44
  6. Step 6: Final answer
    x = 30,237,623.95

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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.