Home / 81,431.19-122,006.52-63,654.93

Finding the Fourth Proportional to 81,431.19, 122,006.52 and 63,654.93

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Solution

The fourth proportional to 81,431.19, 122,006.52 and 63,654.93 is: 95,372.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,431.19 : 122,006.52 = 63,654.93 : x
  2. Step 2: Convert to fraction form
    81,431.19/122,006.52 = 63,654.93/x
  3. Step 3: Cross multiply
    81,431.19x = 122,006.52 × 63,654.93
  4. Step 4: Simplify right side
    81,431.19x = 7,766,316,490.14
  5. Step 5: Solve for x
    x = 7,766,316,490.14/81,431.19
  6. Step 6: Final answer
    x = 95,372.75

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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.