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Finding the Fourth Proportional to 81,911.63, 113,041.68 and 46,103.96

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Solution

The fourth proportional to 81,911.63, 113,041.68 and 46,103.96 is: 63,625.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,911.63 : 113,041.68 = 46,103.96 : x
  2. Step 2: Convert to fraction form
    81,911.63/113,041.68 = 46,103.96/x
  3. Step 3: Cross multiply
    81,911.63x = 113,041.68 × 46,103.96
  4. Step 4: Simplify right side
    81,911.63x = 5,211,668,983.34
  5. Step 5: Solve for x
    x = 5,211,668,983.34/81,911.63
  6. Step 6: Final answer
    x = 63,625.51

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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.