Home / 84,084.31-115,964.96-71,051.15

Finding the Fourth Proportional to 84,084.31, 115,964.96 and 71,051.15

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Solution

The fourth proportional to 84,084.31, 115,964.96 and 71,051.15 is: 97,990.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,084.31 : 115,964.96 = 71,051.15 : x
  2. Step 2: Convert to fraction form
    84,084.31/115,964.96 = 71,051.15/x
  3. Step 3: Cross multiply
    84,084.31x = 115,964.96 × 71,051.15
  4. Step 4: Simplify right side
    84,084.31x = 8,239,443,702.36
  5. Step 5: Solve for x
    x = 8,239,443,702.36/84,084.31
  6. Step 6: Final answer
    x = 97,990.27

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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.