Home / 81,566,131.67-122,345,879.36-20,153,743.80

Finding the Fourth Proportional to 81,566,131.67, 122,345,879.36 and 20,153,743.80

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Solution

The fourth proportional to 81,566,131.67, 122,345,879.36 and 20,153,743.80 is: 30,229,795.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,566,131.67 : 122,345,879.36 = 20,153,743.80 : x
  2. Step 2: Convert to fraction form
    81,566,131.67/122,345,879.36 = 20,153,743.80/x
  3. Step 3: Cross multiply
    81,566,131.67x = 122,345,879.36 × 20,153,743.80
  4. Step 4: Simplify right side
    81,566,131.67x = 2,465,727,507,657,532.50
  5. Step 5: Solve for x
    x = 2,465,727,507,657,532.50/81,566,131.67
  6. Step 6: Final answer
    x = 30,229,795.84

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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.