Home / 71,965.04-99,313.78-40,135.98

Finding the Fourth Proportional to 71,965.04, 99,313.78 and 40,135.98

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Solution

The fourth proportional to 71,965.04, 99,313.78 and 40,135.98 is: 55,388.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,965.04 : 99,313.78 = 40,135.98 : x
  2. Step 2: Convert to fraction form
    71,965.04/99,313.78 = 40,135.98/x
  3. Step 3: Cross multiply
    71,965.04x = 99,313.78 × 40,135.98
  4. Step 4: Simplify right side
    71,965.04x = 3,986,055,887.80
  5. Step 5: Solve for x
    x = 3,986,055,887.80/71,965.04
  6. Step 6: Final answer
    x = 55,388.78

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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.