Home / 90,211.44-135,315.69-31,047.64

Finding the Fourth Proportional to 90,211.44, 135,315.69 and 31,047.64

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Solution

The fourth proportional to 90,211.44, 135,315.69 and 31,047.64 is: 46,570.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,211.44 : 135,315.69 = 31,047.64 : x
  2. Step 2: Convert to fraction form
    90,211.44/135,315.69 = 31,047.64/x
  3. Step 3: Cross multiply
    90,211.44x = 135,315.69 × 31,047.64
  4. Step 4: Simplify right side
    90,211.44x = 4,201,232,829.47
  5. Step 5: Solve for x
    x = 4,201,232,829.47/90,211.44
  6. Step 6: Final answer
    x = 46,570.95

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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.