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Finding the Fourth Proportional to 68,776.50, 103,148.35 and 35,479.43

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Solution

The fourth proportional to 68,776.50, 103,148.35 and 35,479.43 is: 53,210.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,776.50 : 103,148.35 = 35,479.43 : x
  2. Step 2: Convert to fraction form
    68,776.50/103,148.35 = 35,479.43/x
  3. Step 3: Cross multiply
    68,776.50x = 103,148.35 × 35,479.43
  4. Step 4: Simplify right side
    68,776.50x = 3,659,644,445.81
  5. Step 5: Solve for x
    x = 3,659,644,445.81/68,776.50
  6. Step 6: Final answer
    x = 53,210.68

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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.