Home / 82,009,810.80-123,014,716.20-66,084,562.80

Finding the Fourth Proportional to 82,009,810.80, 123,014,716.20 and 66,084,562.80

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Solution

The fourth proportional to 82,009,810.80, 123,014,716.20 and 66,084,562.80 is: 99,126,844.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,009,810.80 : 123,014,716.20 = 66,084,562.80 : x
  2. Step 2: Convert to fraction form
    82,009,810.80/123,014,716.20 = 66,084,562.80/x
  3. Step 3: Cross multiply
    82,009,810.80x = 123,014,716.20 × 66,084,562.80
  4. Step 4: Simplify right side
    82,009,810.80x = 8,129,373,738,043,077
  5. Step 5: Solve for x
    x = 8,129,373,738,043,077/82,009,810.80
  6. Step 6: Final answer
    x = 99,126,844.20

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Double scale
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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.