Home / 81,654.05-122,433.40-31,675.75

Finding the Fourth Proportional to 81,654.05, 122,433.40 and 31,675.75

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Solution

The fourth proportional to 81,654.05, 122,433.40 and 31,675.75 is: 47,495.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,654.05 : 122,433.40 = 31,675.75 : x
  2. Step 2: Convert to fraction form
    81,654.05/122,433.40 = 31,675.75/x
  3. Step 3: Cross multiply
    81,654.05x = 122,433.40 × 31,675.75
  4. Step 4: Simplify right side
    81,654.05x = 3,878,169,333.39
  5. Step 5: Solve for x
    x = 3,878,169,333.39/81,654.05
  6. Step 6: Final answer
    x = 47,495.13

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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.