Home / 81,859.24-112,642.14-68,387.32

Finding the Fourth Proportional to 81,859.24, 112,642.14 and 68,387.32

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Solution

The fourth proportional to 81,859.24, 112,642.14 and 68,387.32 is: 94,104.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,859.24 : 112,642.14 = 68,387.32 : x
  2. Step 2: Convert to fraction form
    81,859.24/112,642.14 = 68,387.32/x
  3. Step 3: Cross multiply
    81,859.24x = 112,642.14 × 68,387.32
  4. Step 4: Simplify right side
    81,859.24x = 7,703,294,073.66
  5. Step 5: Solve for x
    x = 7,703,294,073.66/81,859.24
  6. Step 6: Final answer
    x = 94,104.15

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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.