Home / 281,635.81-422,449.07-68,405.47

Finding the Fourth Proportional to 281,635.81, 422,449.07 and 68,405.47

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Solution

The fourth proportional to 281,635.81, 422,449.07 and 68,405.47 is: 102,607.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,635.81 : 422,449.07 = 68,405.47 : x
  2. Step 2: Convert to fraction form
    281,635.81/422,449.07 = 68,405.47/x
  3. Step 3: Cross multiply
    281,635.81x = 422,449.07 × 68,405.47
  4. Step 4: Simplify right side
    281,635.81x = 28,897,827,184.41
  5. Step 5: Solve for x
    x = 28,897,827,184.41/281,635.81
  6. Step 6: Final answer
    x = 102,607.08

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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.