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Finding the Fourth Proportional to 61,293.50, 91,940.26 and 19,740.50

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Solution

The fourth proportional to 61,293.50, 91,940.26 and 19,740.50 is: 29,610.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,293.50 : 91,940.26 = 19,740.50 : x
  2. Step 2: Convert to fraction form
    61,293.50/91,940.26 = 19,740.50/x
  3. Step 3: Cross multiply
    61,293.50x = 91,940.26 × 19,740.50
  4. Step 4: Simplify right side
    61,293.50x = 1,814,946,603.83
  5. Step 5: Solve for x
    x = 1,814,946,603.83/61,293.50
  6. Step 6: Final answer
    x = 29,610.75

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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.