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Finding the Fourth Proportional to 103,555.56, 155,392.32 and 40,367.44

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Solution

The fourth proportional to 103,555.56, 155,392.32 and 40,367.44 is: 60,574.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,555.56 : 155,392.32 = 40,367.44 : x
  2. Step 2: Convert to fraction form
    103,555.56/155,392.32 = 40,367.44/x
  3. Step 3: Cross multiply
    103,555.56x = 155,392.32 × 40,367.44
  4. Step 4: Simplify right side
    103,555.56x = 6,272,790,154.06
  5. Step 5: Solve for x
    x = 6,272,790,154.06/103,555.56
  6. Step 6: Final answer
    x = 60,574.15

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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.