Home / 51,431.22-70,981.65-28,771.47

Finding the Fourth Proportional to 51,431.22, 70,981.65 and 28,771.47

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Solution

The fourth proportional to 51,431.22, 70,981.65 and 28,771.47 is: 39,708.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,431.22 : 70,981.65 = 28,771.47 : x
  2. Step 2: Convert to fraction form
    51,431.22/70,981.65 = 28,771.47/x
  3. Step 3: Cross multiply
    51,431.22x = 70,981.65 × 28,771.47
  4. Step 4: Simplify right side
    51,431.22x = 2,042,246,413.53
  5. Step 5: Solve for x
    x = 2,042,246,413.53/51,431.22
  6. Step 6: Final answer
    x = 39,708.30

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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.