Home / 51,815.64-71,511.12-31,684.32

Finding the Fourth Proportional to 51,815.64, 71,511.12 and 31,684.32

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Solution

The fourth proportional to 51,815.64, 71,511.12 and 31,684.32 is: 43,727.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,815.64 : 71,511.12 = 31,684.32 : x
  2. Step 2: Convert to fraction form
    51,815.64/71,511.12 = 31,684.32/x
  3. Step 3: Cross multiply
    51,815.64x = 71,511.12 × 31,684.32
  4. Step 4: Simplify right side
    51,815.64x = 2,265,781,209.64
  5. Step 5: Solve for x
    x = 2,265,781,209.64/51,815.64
  6. Step 6: Final answer
    x = 43,727.75

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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.