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Finding the Fourth Proportional to 40,999.82, 61,506.70 and 18,815.09

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Solution

The fourth proportional to 40,999.82, 61,506.70 and 18,815.09 is: 28,225.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,999.82 : 61,506.70 = 18,815.09 : x
  2. Step 2: Convert to fraction form
    40,999.82/61,506.70 = 18,815.09/x
  3. Step 3: Cross multiply
    40,999.82x = 61,506.70 × 18,815.09
  4. Step 4: Simplify right side
    40,999.82x = 1,157,253,741.53
  5. Step 5: Solve for x
    x = 1,157,253,741.53/40,999.82
  6. Step 6: Final answer
    x = 28,225.83

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1.5x scale

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.