Home / 51,171.12-70,621.32-28,513.80

Finding the Fourth Proportional to 51,171.12, 70,621.32 and 28,513.80

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Solution

The fourth proportional to 51,171.12, 70,621.32 and 28,513.80 is: 39,351.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,171.12 : 70,621.32 = 28,513.80 : x
  2. Step 2: Convert to fraction form
    51,171.12/70,621.32 = 28,513.80/x
  3. Step 3: Cross multiply
    51,171.12x = 70,621.32 × 28,513.80
  4. Step 4: Simplify right side
    51,171.12x = 2,013,682,194.22
  5. Step 5: Solve for x
    x = 2,013,682,194.22/51,171.12
  6. Step 6: Final answer
    x = 39,351.93

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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.