Home / 81,343.41-112,175.04-63,431.88

Finding the Fourth Proportional to 81,343.41, 112,175.04 and 63,431.88

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Solution

The fourth proportional to 81,343.41, 112,175.04 and 63,431.88 is: 87,474.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,343.41 : 112,175.04 = 63,431.88 : x
  2. Step 2: Convert to fraction form
    81,343.41/112,175.04 = 63,431.88/x
  3. Step 3: Cross multiply
    81,343.41x = 112,175.04 × 63,431.88
  4. Step 4: Simplify right side
    81,343.41x = 7,115,473,676.28
  5. Step 5: Solve for x
    x = 7,115,473,676.28/81,343.41
  6. Step 6: Final answer
    x = 87,474.49

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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.