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Finding the Fourth Proportional to 62,879.40, 94,330.74 and 20,762.42

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Solution

The fourth proportional to 62,879.40, 94,330.74 and 20,762.42 is: 31,147.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,879.40 : 94,330.74 = 20,762.42 : x
  2. Step 2: Convert to fraction form
    62,879.40/94,330.74 = 20,762.42/x
  3. Step 3: Cross multiply
    62,879.40x = 94,330.74 × 20,762.42
  4. Step 4: Simplify right side
    62,879.40x = 1,958,533,971.14
  5. Step 5: Solve for x
    x = 1,958,533,971.14/62,879.40
  6. Step 6: Final answer
    x = 31,147.47

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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.