Home / 51,811.20-71,504.64-31,677.12

Finding the Fourth Proportional to 51,811.20, 71,504.64 and 31,677.12

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Solution

The fourth proportional to 51,811.20, 71,504.64 and 31,677.12 is: 43,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,811.20 : 71,504.64 = 31,677.12 : x
  2. Step 2: Convert to fraction form
    51,811.20/71,504.64 = 31,677.12/x
  3. Step 3: Cross multiply
    51,811.20x = 71,504.64 × 31,677.12
  4. Step 4: Simplify right side
    51,811.20x = 2,265,061,061.84
  5. Step 5: Solve for x
    x = 2,265,061,061.84/51,811.20
  6. Step 6: Final answer
    x = 43,717.60

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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.