Home / 71,976.99-99,328.38-40,147.95

Finding the Fourth Proportional to 71,976.99, 99,328.38 and 40,147.95

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Solution

The fourth proportional to 71,976.99, 99,328.38 and 40,147.95 is: 55,404.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,976.99 : 99,328.38 = 40,147.95 : x
  2. Step 2: Convert to fraction form
    71,976.99/99,328.38 = 40,147.95/x
  3. Step 3: Cross multiply
    71,976.99x = 99,328.38 × 40,147.95
  4. Step 4: Simplify right side
    71,976.99x = 3,987,830,833.82
  5. Step 5: Solve for x
    x = 3,987,830,833.82/71,976.99
  6. Step 6: Final answer
    x = 55,404.25

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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.