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Finding the Fourth Proportional to 67,993.12, 102,000.62 and 28,561.51

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Solution

The fourth proportional to 67,993.12, 102,000.62 and 28,561.51 is: 42,846.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,993.12 : 102,000.62 = 28,561.51 : x
  2. Step 2: Convert to fraction form
    67,993.12/102,000.62 = 28,561.51/x
  3. Step 3: Cross multiply
    67,993.12x = 102,000.62 × 28,561.51
  4. Step 4: Simplify right side
    67,993.12x = 2,913,291,766.38
  5. Step 5: Solve for x
    x = 2,913,291,766.38/67,993.12
  6. Step 6: Final answer
    x = 42,846.86

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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.