Home / 90,638.43-125,084.55-62,018.09

Finding the Fourth Proportional to 90,638.43, 125,084.55 and 62,018.09

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Solution

The fourth proportional to 90,638.43, 125,084.55 and 62,018.09 is: 85,587.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,638.43 : 125,084.55 = 62,018.09 : x
  2. Step 2: Convert to fraction form
    90,638.43/125,084.55 = 62,018.09/x
  3. Step 3: Cross multiply
    90,638.43x = 125,084.55 × 62,018.09
  4. Step 4: Simplify right side
    90,638.43x = 7,757,504,955.72
  5. Step 5: Solve for x
    x = 7,757,504,955.72/90,638.43
  6. Step 6: Final answer
    x = 85,587.37

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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.