Home / 90,020.89-135,047.74-30,862.54

Finding the Fourth Proportional to 90,020.89, 135,047.74 and 30,862.54

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Solution

The fourth proportional to 90,020.89, 135,047.74 and 30,862.54 is: 46,299.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,020.89 : 135,047.74 = 30,862.54 : x
  2. Step 2: Convert to fraction form
    90,020.89/135,047.74 = 30,862.54/x
  3. Step 3: Cross multiply
    90,020.89x = 135,047.74 × 30,862.54
  4. Step 4: Simplify right side
    90,020.89x = 4,167,916,277.66
  5. Step 5: Solve for x
    x = 4,167,916,277.66/90,020.89
  6. Step 6: Final answer
    x = 46,299.43

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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.