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Finding the Fourth Proportional to 92,093.40, 138,140.16 and 28,913.25

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Solution

The fourth proportional to 92,093.40, 138,140.16 and 28,913.25 is: 43,369.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,093.40 : 138,140.16 = 28,913.25 : x
  2. Step 2: Convert to fraction form
    92,093.40/138,140.16 = 28,913.25/x
  3. Step 3: Cross multiply
    92,093.40x = 138,140.16 × 28,913.25
  4. Step 4: Simplify right side
    92,093.40x = 3,994,080,145.85
  5. Step 5: Solve for x
    x = 3,994,080,145.85/92,093.40
  6. Step 6: Final answer
    x = 43,369.88

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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.