Home / 90,890.57-136,319.44-31,743.15

Finding the Fourth Proportional to 90,890.57, 136,319.44 and 31,743.15

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Solution

The fourth proportional to 90,890.57, 136,319.44 and 31,743.15 is: 47,608.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,890.57 : 136,319.44 = 31,743.15 : x
  2. Step 2: Convert to fraction form
    90,890.57/136,319.44 = 31,743.15/x
  3. Step 3: Cross multiply
    90,890.57x = 136,319.44 × 31,743.15
  4. Step 4: Simplify right side
    90,890.57x = 4,327,208,431.84
  5. Step 5: Solve for x
    x = 4,327,208,431.84/90,890.57
  6. Step 6: Final answer
    x = 47,608.99

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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.