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Finding the Fourth Proportional to 36,506.40, 54,781.20 and 26,620.80

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Solution

The fourth proportional to 36,506.40, 54,781.20 and 26,620.80 is: 39,946.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,506.40 : 54,781.20 = 26,620.80 : x
  2. Step 2: Convert to fraction form
    36,506.40/54,781.20 = 26,620.80/x
  3. Step 3: Cross multiply
    36,506.40x = 54,781.20 × 26,620.80
  4. Step 4: Simplify right side
    36,506.40x = 1,458,319,368.96
  5. Step 5: Solve for x
    x = 1,458,319,368.96/36,506.40
  6. Step 6: Final answer
    x = 39,946.95

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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.