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Finding the Fourth Proportional to 43,178, 59,611.56 and 28,299.92

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Solution

The fourth proportional to 43,178, 59,611.56 and 28,299.92 is: 39,070.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,178 : 59,611.56 = 28,299.92 : x
  2. Step 2: Convert to fraction form
    43,178/59,611.56 = 28,299.92/x
  3. Step 3: Cross multiply
    43,178x = 59,611.56 × 28,299.92
  4. Step 4: Simplify right side
    43,178x = 1,687,002,379.08
  5. Step 5: Solve for x
    x = 1,687,002,379.08/43,178
  6. Step 6: Final answer
    x = 39,070.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.