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Finding the Fourth Proportional to 81,907.55, 113,067.29 and 55,065.63

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Solution

The fourth proportional to 81,907.55, 113,067.29 and 55,065.63 is: 76,014.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,907.55 : 113,067.29 = 55,065.63 : x
  2. Step 2: Convert to fraction form
    81,907.55/113,067.29 = 55,065.63/x
  3. Step 3: Cross multiply
    81,907.55x = 113,067.29 × 55,065.63
  4. Step 4: Simplify right side
    81,907.55x = 6,226,121,556.24
  5. Step 5: Solve for x
    x = 6,226,121,556.24/81,907.55
  6. Step 6: Final answer
    x = 76,014.01

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1.5x scale

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.