Home / 83,658.12-115,453.99-47,359.59

Finding the Fourth Proportional to 83,658.12, 115,453.99 and 47,359.59

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Solution

The fourth proportional to 83,658.12, 115,453.99 and 47,359.59 is: 65,359.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,658.12 : 115,453.99 = 47,359.59 : x
  2. Step 2: Convert to fraction form
    83,658.12/115,453.99 = 47,359.59/x
  3. Step 3: Cross multiply
    83,658.12x = 115,453.99 × 47,359.59
  4. Step 4: Simplify right side
    83,658.12x = 5,467,853,630.26
  5. Step 5: Solve for x
    x = 5,467,853,630.26/83,658.12
  6. Step 6: Final answer
    x = 65,359.51

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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.