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Finding the Fourth Proportional to 61,274.40, 91,902.60 and 19,144.68

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Solution

The fourth proportional to 61,274.40, 91,902.60 and 19,144.68 is: 28,714.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,274.40 : 91,902.60 = 19,144.68 : x
  2. Step 2: Convert to fraction form
    61,274.40/91,902.60 = 19,144.68/x
  3. Step 3: Cross multiply
    61,274.40x = 91,902.60 × 19,144.68
  4. Step 4: Simplify right side
    61,274.40x = 1,759,445,868.17
  5. Step 5: Solve for x
    x = 1,759,445,868.17/61,274.40
  6. Step 6: Final answer
    x = 28,714.21

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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.