Home / 90,427.54-124,816-54,611.50

Finding the Fourth Proportional to 90,427.54, 124,816 and 54,611.50

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Solution

The fourth proportional to 90,427.54, 124,816 and 54,611.50 is: 75,379.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,427.54 : 124,816 = 54,611.50 : x
  2. Step 2: Convert to fraction form
    90,427.54/124,816 = 54,611.50/x
  3. Step 3: Cross multiply
    90,427.54x = 124,816 × 54,611.50
  4. Step 4: Simplify right side
    90,427.54x = 6,816,388,984
  5. Step 5: Solve for x
    x = 6,816,388,984/90,427.54
  6. Step 6: Final answer
    x = 75,379.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.