Home / 82,461,608.70-123,692,413.05-80,572,040.70

Finding the Fourth Proportional to 82,461,608.70, 123,692,413.05 and 80,572,040.70

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Solution

The fourth proportional to 82,461,608.70, 123,692,413.05 and 80,572,040.70 is: 120,858,061.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,461,608.70 : 123,692,413.05 = 80,572,040.70 : x
  2. Step 2: Convert to fraction form
    82,461,608.70/123,692,413.05 = 80,572,040.70/x
  3. Step 3: Cross multiply
    82,461,608.70x = 123,692,413.05 × 80,572,040.70
  4. Step 4: Simplify right side
    82,461,608.70x = 9,966,150,138,545,812
  5. Step 5: Solve for x
    x = 9,966,150,138,545,812/82,461,608.70
  6. Step 6: Final answer
    x = 120,858,061.05

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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.