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Finding the Fourth Proportional to 104,068.56, 156,039.62 and 40,812.90

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Solution

The fourth proportional to 104,068.56, 156,039.62 and 40,812.90 is: 61,194.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,068.56 : 156,039.62 = 40,812.90 : x
  2. Step 2: Convert to fraction form
    104,068.56/156,039.62 = 40,812.90/x
  3. Step 3: Cross multiply
    104,068.56x = 156,039.62 × 40,812.90
  4. Step 4: Simplify right side
    104,068.56x = 6,368,429,203.03
  5. Step 5: Solve for x
    x = 6,368,429,203.03/104,068.56
  6. Step 6: Final answer
    x = 61,194.55

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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.