Home / 71,519.52-98,708.67-39,698.64

Finding the Fourth Proportional to 71,519.52, 98,708.67 and 39,698.64

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Solution

The fourth proportional to 71,519.52, 98,708.67 and 39,698.64 is: 54,790.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,519.52 : 98,708.67 = 39,698.64 : x
  2. Step 2: Convert to fraction form
    71,519.52/98,708.67 = 39,698.64/x
  3. Step 3: Cross multiply
    71,519.52x = 98,708.67 × 39,698.64
  4. Step 4: Simplify right side
    71,519.52x = 3,918,599,955.21
  5. Step 5: Solve for x
    x = 3,918,599,955.21/71,519.52
  6. Step 6: Final answer
    x = 54,790.64

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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.