Home / 71,976.75-99,328.28-40,146.99

Finding the Fourth Proportional to 71,976.75, 99,328.28 and 40,146.99

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Solution

The fourth proportional to 71,976.75, 99,328.28 and 40,146.99 is: 55,403.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,976.75 : 99,328.28 = 40,146.99 : x
  2. Step 2: Convert to fraction form
    71,976.75/99,328.28 = 40,146.99/x
  3. Step 3: Cross multiply
    71,976.75x = 99,328.28 × 40,146.99
  4. Step 4: Simplify right side
    71,976.75x = 3,987,731,463.88
  5. Step 5: Solve for x
    x = 3,987,731,463.88/71,976.75
  6. Step 6: Final answer
    x = 55,403.05

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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.