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Finding the Fourth Proportional to 68,907.60, 103,416.48 and 35,637.21

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Solution

The fourth proportional to 68,907.60, 103,416.48 and 35,637.21 is: 53,484.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,907.60 : 103,416.48 = 35,637.21 : x
  2. Step 2: Convert to fraction form
    68,907.60/103,416.48 = 35,637.21/x
  3. Step 3: Cross multiply
    68,907.60x = 103,416.48 × 35,637.21
  4. Step 4: Simplify right side
    68,907.60x = 3,685,474,815.22
  5. Step 5: Solve for x
    x = 3,685,474,815.22/68,907.60
  6. Step 6: Final answer
    x = 53,484.30

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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.