Home / 90,012.36-124,224.32-49,729.64

Finding the Fourth Proportional to 90,012.36, 124,224.32 and 49,729.64

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Solution

The fourth proportional to 90,012.36, 124,224.32 and 49,729.64 is: 68,630.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,012.36 : 124,224.32 = 49,729.64 : x
  2. Step 2: Convert to fraction form
    90,012.36/124,224.32 = 49,729.64/x
  3. Step 3: Cross multiply
    90,012.36x = 124,224.32 × 49,729.64
  4. Step 4: Simplify right side
    90,012.36x = 6,177,630,712.84
  5. Step 5: Solve for x
    x = 6,177,630,712.84/90,012.36
  6. Step 6: Final answer
    x = 68,630.92

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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.