Home / 90,454.67-135,694.35-31,274.45

Finding the Fourth Proportional to 90,454.67, 135,694.35 and 31,274.45

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Solution

The fourth proportional to 90,454.67, 135,694.35 and 31,274.45 is: 46,915.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,454.67 : 135,694.35 = 31,274.45 : x
  2. Step 2: Convert to fraction form
    90,454.67/135,694.35 = 31,274.45/x
  3. Step 3: Cross multiply
    90,454.67x = 135,694.35 × 31,274.45
  4. Step 4: Simplify right side
    90,454.67x = 4,243,765,485.89
  5. Step 5: Solve for x
    x = 4,243,765,485.89/90,454.67
  6. Step 6: Final answer
    x = 46,915.94

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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.