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Finding the Fourth Proportional to 81,911.34, 113,041.30 and 46,103.68

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Solution

The fourth proportional to 81,911.34, 113,041.30 and 46,103.68 is: 63,625.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,911.34 : 113,041.30 = 46,103.68 : x
  2. Step 2: Convert to fraction form
    81,911.34/113,041.30 = 46,103.68/x
  3. Step 3: Cross multiply
    81,911.34x = 113,041.30 × 46,103.68
  4. Step 4: Simplify right side
    81,911.34x = 5,211,619,921.98
  5. Step 5: Solve for x
    x = 5,211,619,921.98/81,911.34
  6. Step 6: Final answer
    x = 63,625.13

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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.