Home / 71,519.72-98,695.96-39,688.08

Finding the Fourth Proportional to 71,519.72, 98,695.96 and 39,688.08

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Solution

The fourth proportional to 71,519.72, 98,695.96 and 39,688.08 is: 54,768.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,519.72 : 98,695.96 = 39,688.08 : x
  2. Step 2: Convert to fraction form
    71,519.72/98,695.96 = 39,688.08/x
  3. Step 3: Cross multiply
    71,519.72x = 98,695.96 × 39,688.08
  4. Step 4: Simplify right side
    71,519.72x = 3,917,053,156.16
  5. Step 5: Solve for x
    x = 3,917,053,156.16/71,519.72
  6. Step 6: Final answer
    x = 54,768.85

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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.