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Finding the Fourth Proportional to 76,883.40, 115,325.10 and 41,891.40

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Solution

The fourth proportional to 76,883.40, 115,325.10 and 41,891.40 is: 62,837.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,883.40 : 115,325.10 = 41,891.40 : x
  2. Step 2: Convert to fraction form
    76,883.40/115,325.10 = 41,891.40/x
  3. Step 3: Cross multiply
    76,883.40x = 115,325.10 × 41,891.40
  4. Step 4: Simplify right side
    76,883.40x = 4,831,129,894.14
  5. Step 5: Solve for x
    x = 4,831,129,894.14/76,883.40
  6. Step 6: Final answer
    x = 62,837.10

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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.