Home / 70,674.13-105,985.28-20,741.41

Finding the Fourth Proportional to 70,674.13, 105,985.28 and 20,741.41

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Solution

The fourth proportional to 70,674.13, 105,985.28 and 20,741.41 is: 31,104.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,674.13 : 105,985.28 = 20,741.41 : x
  2. Step 2: Convert to fraction form
    70,674.13/105,985.28 = 20,741.41/x
  3. Step 3: Cross multiply
    70,674.13x = 105,985.28 × 20,741.41
  4. Step 4: Simplify right side
    70,674.13x = 2,198,284,042.74
  5. Step 5: Solve for x
    x = 2,198,284,042.74/70,674.13
  6. Step 6: Final answer
    x = 31,104.51

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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.