Home / 81,108,633.51-111,892,394.63-71,825,664.15

Finding the Fourth Proportional to 81,108,633.51, 111,892,394.63 and 71,825,664.15

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Solution

The fourth proportional to 81,108,633.51, 111,892,394.63 and 71,825,664.15 is: 99,086,191.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,108,633.51 : 111,892,394.63 = 71,825,664.15 : x
  2. Step 2: Convert to fraction form
    81,108,633.51/111,892,394.63 = 71,825,664.15/x
  3. Step 3: Cross multiply
    81,108,633.51x = 111,892,394.63 × 71,825,664.15
  4. Step 4: Simplify right side
    81,108,633.51x = 8,036,745,557,813,208
  5. Step 5: Solve for x
    x = 8,036,745,557,813,208/81,108,633.51
  6. Step 6: Final answer
    x = 99,086,191.08

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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.