Home / 71,519.28-98,688.60-39,689.52

Finding the Fourth Proportional to 71,519.28, 98,688.60 and 39,689.52

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Solution

The fourth proportional to 71,519.28, 98,688.60 and 39,689.52 is: 54,767.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,519.28 : 98,688.60 = 39,689.52 : x
  2. Step 2: Convert to fraction form
    71,519.28/98,688.60 = 39,689.52/x
  3. Step 3: Cross multiply
    71,519.28x = 98,688.60 × 39,689.52
  4. Step 4: Simplify right side
    71,519.28x = 3,916,903,163.47
  5. Step 5: Solve for x
    x = 3,916,903,163.47/71,519.28
  6. Step 6: Final answer
    x = 54,767.09

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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.