Home / 90,823.80-136,196.82-28,499.16

Finding the Fourth Proportional to 90,823.80, 136,196.82 and 28,499.16

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Solution

The fourth proportional to 90,823.80, 136,196.82 and 28,499.16 is: 42,736.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,823.80 : 136,196.82 = 28,499.16 : x
  2. Step 2: Convert to fraction form
    90,823.80/136,196.82 = 28,499.16/x
  3. Step 3: Cross multiply
    90,823.80x = 136,196.82 × 28,499.16
  4. Step 4: Simplify right side
    90,823.80x = 3,881,494,964.67
  5. Step 5: Solve for x
    x = 3,881,494,964.67/90,823.80
  6. Step 6: Final answer
    x = 42,736.54

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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.