Home / 90,121.37-124,368.30-49,837.86

Finding the Fourth Proportional to 90,121.37, 124,368.30 and 49,837.86

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Solution

The fourth proportional to 90,121.37, 124,368.30 and 49,837.86 is: 68,776.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,121.37 : 124,368.30 = 49,837.86 : x
  2. Step 2: Convert to fraction form
    90,121.37/124,368.30 = 49,837.86/x
  3. Step 3: Cross multiply
    90,121.37x = 124,368.30 × 49,837.86
  4. Step 4: Simplify right side
    90,121.37x = 6,198,249,923.84
  5. Step 5: Solve for x
    x = 6,198,249,923.84/90,121.37
  6. Step 6: Final answer
    x = 68,776.69

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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.