Home / 90,980.12-136,478.41-34,817.96

Finding the Fourth Proportional to 90,980.12, 136,478.41 and 34,817.96

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Solution

The fourth proportional to 90,980.12, 136,478.41 and 34,817.96 is: 52,230.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,980.12 : 136,478.41 = 34,817.96 : x
  2. Step 2: Convert to fraction form
    90,980.12/136,478.41 = 34,817.96/x
  3. Step 3: Cross multiply
    90,980.12x = 136,478.41 × 34,817.96
  4. Step 4: Simplify right side
    90,980.12x = 4,751,900,074.39
  5. Step 5: Solve for x
    x = 4,751,900,074.39/90,980.12
  6. Step 6: Final answer
    x = 52,230.09

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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.