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Finding the Fourth Proportional to 73,276.34, 109,840.64 and 28,885.90

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Solution

The fourth proportional to 73,276.34, 109,840.64 and 28,885.90 is: 43,299.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,276.34 : 109,840.64 = 28,885.90 : x
  2. Step 2: Convert to fraction form
    73,276.34/109,840.64 = 28,885.90/x
  3. Step 3: Cross multiply
    73,276.34x = 109,840.64 × 28,885.90
  4. Step 4: Simplify right side
    73,276.34x = 3,172,845,742.98
  5. Step 5: Solve for x
    x = 3,172,845,742.98/73,276.34
  6. Step 6: Final answer
    x = 43,299.73

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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.