Home / 82,759.12-124,064.84-68,833.40

Finding the Fourth Proportional to 82,759.12, 124,064.84 and 68,833.40

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Solution

The fourth proportional to 82,759.12, 124,064.84 and 68,833.40 is: 103,188.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,759.12 : 124,064.84 = 68,833.40 : x
  2. Step 2: Convert to fraction form
    82,759.12/124,064.84 = 68,833.40/x
  3. Step 3: Cross multiply
    82,759.12x = 124,064.84 × 68,833.40
  4. Step 4: Simplify right side
    82,759.12x = 8,539,804,757.66
  5. Step 5: Solve for x
    x = 8,539,804,757.66/82,759.12
  6. Step 6: Final answer
    x = 103,188.68

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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.