Home / 81,716.34-112,726.18-54,868.19

Finding the Fourth Proportional to 81,716.34, 112,726.18 and 54,868.19

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Solution

The fourth proportional to 81,716.34, 112,726.18 and 54,868.19 is: 75,689.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,716.34 : 112,726.18 = 54,868.19 : x
  2. Step 2: Convert to fraction form
    81,716.34/112,726.18 = 54,868.19/x
  3. Step 3: Cross multiply
    81,716.34x = 112,726.18 × 54,868.19
  4. Step 4: Simplify right side
    81,716.34x = 6,185,080,967.17
  5. Step 5: Solve for x
    x = 6,185,080,967.17/81,716.34
  6. Step 6: Final answer
    x = 75,689.64

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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.