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Finding the Fourth Proportional to 61,300.48, 91,950.80 and 19,180.80

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Solution

The fourth proportional to 61,300.48, 91,950.80 and 19,180.80 is: 28,771.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,300.48 : 91,950.80 = 19,180.80 : x
  2. Step 2: Convert to fraction form
    61,300.48/91,950.80 = 19,180.80/x
  3. Step 3: Cross multiply
    61,300.48x = 91,950.80 × 19,180.80
  4. Step 4: Simplify right side
    61,300.48x = 1,763,689,904.64
  5. Step 5: Solve for x
    x = 1,763,689,904.64/61,300.48
  6. Step 6: Final answer
    x = 28,771.23

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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.