Home / 71,975.99-99,327-40,146.95

Finding the Fourth Proportional to 71,975.99, 99,327 and 40,146.95

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Solution

The fourth proportional to 71,975.99, 99,327 and 40,146.95 is: 55,402.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,975.99 : 99,327 = 40,146.95 : x
  2. Step 2: Convert to fraction form
    71,975.99/99,327 = 40,146.95/x
  3. Step 3: Cross multiply
    71,975.99x = 99,327 × 40,146.95
  4. Step 4: Simplify right side
    71,975.99x = 3,987,675,606.02
  5. Step 5: Solve for x
    x = 3,987,675,606.02/71,975.99
  6. Step 6: Final answer
    x = 55,402.86

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1.5x scale

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.