Home / 82,275.40-123,413.10-19,945.90

Finding the Fourth Proportional to 82,275.40, 123,413.10 and 19,945.90

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Solution

The fourth proportional to 82,275.40, 123,413.10 and 19,945.90 is: 29,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,275.40 : 123,413.10 = 19,945.90 : x
  2. Step 2: Convert to fraction form
    82,275.40/123,413.10 = 19,945.90/x
  3. Step 3: Cross multiply
    82,275.40x = 123,413.10 × 19,945.90
  4. Step 4: Simplify right side
    82,275.40x = 2,461,585,351.29
  5. Step 5: Solve for x
    x = 2,461,585,351.29/82,275.40
  6. Step 6: Final answer
    x = 29,918.85

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1.5x scale

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.