Home / 81,540.27-112,526.39-45,729.51

Finding the Fourth Proportional to 81,540.27, 112,526.39 and 45,729.51

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Solution

The fourth proportional to 81,540.27, 112,526.39 and 45,729.51 is: 63,107.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,540.27 : 112,526.39 = 45,729.51 : x
  2. Step 2: Convert to fraction form
    81,540.27/112,526.39 = 45,729.51/x
  3. Step 3: Cross multiply
    81,540.27x = 112,526.39 × 45,729.51
  4. Step 4: Simplify right side
    81,540.27x = 5,145,776,676.77
  5. Step 5: Solve for x
    x = 5,145,776,676.77/81,540.27
  6. Step 6: Final answer
    x = 63,107.18

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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.