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Finding the Fourth Proportional to 68,152.05, 102,187.98 and 28,687.77

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Solution

The fourth proportional to 68,152.05, 102,187.98 and 28,687.77 is: 43,014.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,152.05 : 102,187.98 = 28,687.77 : x
  2. Step 2: Convert to fraction form
    68,152.05/102,187.98 = 28,687.77/x
  3. Step 3: Cross multiply
    68,152.05x = 102,187.98 × 28,687.77
  4. Step 4: Simplify right side
    68,152.05x = 2,931,545,267.00
  5. Step 5: Solve for x
    x = 2,931,545,267.00/68,152.05
  6. Step 6: Final answer
    x = 43,014.78

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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.