Home / 90,627.89-135,827.01-51,207.21

Finding the Fourth Proportional to 90,627.89, 135,827.01 and 51,207.21

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Solution

The fourth proportional to 90,627.89, 135,827.01 and 51,207.21 is: 76,745.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,627.89 : 135,827.01 = 51,207.21 : x
  2. Step 2: Convert to fraction form
    90,627.89/135,827.01 = 51,207.21/x
  3. Step 3: Cross multiply
    90,627.89x = 135,827.01 × 51,207.21
  4. Step 4: Simplify right side
    90,627.89x = 6,955,322,224.74
  5. Step 5: Solve for x
    x = 6,955,322,224.74/90,627.89
  6. Step 6: Final answer
    x = 76,745.94

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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.