Home / 83,456.48-115,136.16-47,639.36

Finding the Fourth Proportional to 83,456.48, 115,136.16 and 47,639.36

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Solution

The fourth proportional to 83,456.48, 115,136.16 and 47,639.36 is: 65,723.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,456.48 : 115,136.16 = 47,639.36 : x
  2. Step 2: Convert to fraction form
    83,456.48/115,136.16 = 47,639.36/x
  3. Step 3: Cross multiply
    83,456.48x = 115,136.16 × 47,639.36
  4. Step 4: Simplify right side
    83,456.48x = 5,485,012,975.26
  5. Step 5: Solve for x
    x = 5,485,012,975.26/83,456.48
  6. Step 6: Final answer
    x = 65,723.03

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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.