Home / 90,021.54-124,237.01-49,738.83

Finding the Fourth Proportional to 90,021.54, 124,237.01 and 49,738.83

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Solution

The fourth proportional to 90,021.54, 124,237.01 and 49,738.83 is: 68,643.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,021.54 : 124,237.01 = 49,738.83 : x
  2. Step 2: Convert to fraction form
    90,021.54/124,237.01 = 49,738.83/x
  3. Step 3: Cross multiply
    90,021.54x = 124,237.01 × 49,738.83
  4. Step 4: Simplify right side
    90,021.54x = 6,179,403,271.40
  5. Step 5: Solve for x
    x = 6,179,403,271.40/90,021.54
  6. Step 6: Final answer
    x = 68,643.61

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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.