Home / 81,885.03-122,754.49-31,953.52

Finding the Fourth Proportional to 81,885.03, 122,754.49 and 31,953.52

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Solution

The fourth proportional to 81,885.03, 122,754.49 and 31,953.52 is: 47,901.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,885.03 : 122,754.49 = 31,953.52 : x
  2. Step 2: Convert to fraction form
    81,885.03/122,754.49 = 31,953.52/x
  3. Step 3: Cross multiply
    81,885.03x = 122,754.49 × 31,953.52
  4. Step 4: Simplify right side
    81,885.03x = 3,922,438,051.30
  5. Step 5: Solve for x
    x = 3,922,438,051.30/81,885.03
  6. Step 6: Final answer
    x = 47,901.77

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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.