Home / 81,749.73-122,671.17-31,823.35

Finding the Fourth Proportional to 81,749.73, 122,671.17 and 31,823.35

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Solution

The fourth proportional to 81,749.73, 122,671.17 and 31,823.35 is: 47,753.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,749.73 : 122,671.17 = 31,823.35 : x
  2. Step 2: Convert to fraction form
    81,749.73/122,671.17 = 31,823.35/x
  3. Step 3: Cross multiply
    81,749.73x = 122,671.17 × 31,823.35
  4. Step 4: Simplify right side
    81,749.73x = 3,903,807,577.82
  5. Step 5: Solve for x
    x = 3,903,807,577.82/81,749.73
  6. Step 6: Final answer
    x = 47,753.16

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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.