Home / 51,021.36-70,413.91-28,364.78

Finding the Fourth Proportional to 51,021.36, 70,413.91 and 28,364.78

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Solution

The fourth proportional to 51,021.36, 70,413.91 and 28,364.78 is: 39,145.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,021.36 : 70,413.91 = 28,364.78 : x
  2. Step 2: Convert to fraction form
    51,021.36/70,413.91 = 28,364.78/x
  3. Step 3: Cross multiply
    51,021.36x = 70,413.91 × 28,364.78
  4. Step 4: Simplify right side
    51,021.36x = 1,997,275,171.21
  5. Step 5: Solve for x
    x = 1,997,275,171.21/51,021.36
  6. Step 6: Final answer
    x = 39,145.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.