Home / 81,346.41-112,179.18-63,434.88

Finding the Fourth Proportional to 81,346.41, 112,179.18 and 63,434.88

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Solution

The fourth proportional to 81,346.41, 112,179.18 and 63,434.88 is: 87,478.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,346.41 : 112,179.18 = 63,434.88 : x
  2. Step 2: Convert to fraction form
    81,346.41/112,179.18 = 63,434.88/x
  3. Step 3: Cross multiply
    81,346.41x = 112,179.18 × 63,434.88
  4. Step 4: Simplify right side
    81,346.41x = 7,116,072,821.80
  5. Step 5: Solve for x
    x = 7,116,072,821.80/81,346.41
  6. Step 6: Final answer
    x = 87,478.63

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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.