Home / 90,015.09-124,223.33-49,731.45

Finding the Fourth Proportional to 90,015.09, 124,223.33 and 49,731.45

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Solution

The fourth proportional to 90,015.09, 124,223.33 and 49,731.45 is: 68,630.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,015.09 : 124,223.33 = 49,731.45 : x
  2. Step 2: Convert to fraction form
    90,015.09/124,223.33 = 49,731.45/x
  3. Step 3: Cross multiply
    90,015.09x = 124,223.33 × 49,731.45
  4. Step 4: Simplify right side
    90,015.09x = 6,177,806,076.07
  5. Step 5: Solve for x
    x = 6,177,806,076.07/90,015.09
  6. Step 6: Final answer
    x = 68,630.78

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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.