Home / 71,971.07-99,313.16-40,142.03

Finding the Fourth Proportional to 71,971.07, 99,313.16 and 40,142.03

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Solution

The fourth proportional to 71,971.07, 99,313.16 and 40,142.03 is: 55,392.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,971.07 : 99,313.16 = 40,142.03 : x
  2. Step 2: Convert to fraction form
    71,971.07/99,313.16 = 40,142.03/x
  3. Step 3: Cross multiply
    71,971.07x = 99,313.16 × 40,142.03
  4. Step 4: Simplify right side
    71,971.07x = 3,986,631,150.84
  5. Step 5: Solve for x
    x = 3,986,631,150.84/71,971.07
  6. Step 6: Final answer
    x = 55,392.14

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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.