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Finding the Fourth Proportional to 40,771.58, 61,190.58 and 21,055.91

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Solution

The fourth proportional to 40,771.58, 61,190.58 and 21,055.91 is: 31,601.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,771.58 : 61,190.58 = 21,055.91 : x
  2. Step 2: Convert to fraction form
    40,771.58/61,190.58 = 21,055.91/x
  3. Step 3: Cross multiply
    40,771.58x = 61,190.58 × 21,055.91
  4. Step 4: Simplify right side
    40,771.58x = 1,288,423,345.33
  5. Step 5: Solve for x
    x = 1,288,423,345.33/40,771.58
  6. Step 6: Final answer
    x = 31,601.02

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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.