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Finding the Fourth Proportional to 40,736.04, 61,113.62 and 12,654.64

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Solution

The fourth proportional to 40,736.04, 61,113.62 and 12,654.64 is: 18,984.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,736.04 : 61,113.62 = 12,654.64 : x
  2. Step 2: Convert to fraction form
    40,736.04/61,113.62 = 12,654.64/x
  3. Step 3: Cross multiply
    40,736.04x = 61,113.62 × 12,654.64
  4. Step 4: Simplify right side
    40,736.04x = 773,370,860.20
  5. Step 5: Solve for x
    x = 773,370,860.20/40,736.04
  6. Step 6: Final answer
    x = 18,984.93

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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.