Home / 71,519.56-98,700.36-39,688.72

Finding the Fourth Proportional to 71,519.56, 98,700.36 and 39,688.72

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Solution

The fourth proportional to 71,519.56, 98,700.36 and 39,688.72 is: 54,772.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,519.56 : 98,700.36 = 39,688.72 : x
  2. Step 2: Convert to fraction form
    71,519.56/98,700.36 = 39,688.72/x
  3. Step 3: Cross multiply
    71,519.56x = 98,700.36 × 39,688.72
  4. Step 4: Simplify right side
    71,519.56x = 3,917,290,951.94
  5. Step 5: Solve for x
    x = 3,917,290,951.94/71,519.56
  6. Step 6: Final answer
    x = 54,772.30

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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.