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Finding the Fourth Proportional to 68,055.42, 102,118.05 and 28,104.06

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Solution

The fourth proportional to 68,055.42, 102,118.05 and 28,104.06 is: 42,170.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,055.42 : 102,118.05 = 28,104.06 : x
  2. Step 2: Convert to fraction form
    68,055.42/102,118.05 = 28,104.06/x
  3. Step 3: Cross multiply
    68,055.42x = 102,118.05 × 28,104.06
  4. Step 4: Simplify right side
    68,055.42x = 2,869,931,804.28
  5. Step 5: Solve for x
    x = 2,869,931,804.28/68,055.42
  6. Step 6: Final answer
    x = 42,170.51

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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.