Home / 85,127.72-127,625.37-55,078.47

Finding the Fourth Proportional to 85,127.72, 127,625.37 and 55,078.47

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Solution

The fourth proportional to 85,127.72, 127,625.37 and 55,078.47 is: 82,574.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,127.72 : 127,625.37 = 55,078.47 : x
  2. Step 2: Convert to fraction form
    85,127.72/127,625.37 = 55,078.47/x
  3. Step 3: Cross multiply
    85,127.72x = 127,625.37 × 55,078.47
  4. Step 4: Simplify right side
    85,127.72x = 7,029,410,036.58
  5. Step 5: Solve for x
    x = 7,029,410,036.58/85,127.72
  6. Step 6: Final answer
    x = 82,574.86

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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.