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Finding the Fourth Proportional to 68,164.80, 102,227.04 and 30,703.20

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Solution

The fourth proportional to 68,164.80, 102,227.04 and 30,703.20 is: 46,045.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,164.80 : 102,227.04 = 30,703.20 : x
  2. Step 2: Convert to fraction form
    68,164.80/102,227.04 = 30,703.20/x
  3. Step 3: Cross multiply
    68,164.80x = 102,227.04 × 30,703.20
  4. Step 4: Simplify right side
    68,164.80x = 3,138,697,254.53
  5. Step 5: Solve for x
    x = 3,138,697,254.53/68,164.80
  6. Step 6: Final answer
    x = 46,045.72

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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.