Home / 84,313.28-126,581.09-77,350.42

Finding the Fourth Proportional to 84,313.28, 126,581.09 and 77,350.42

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Solution

The fourth proportional to 84,313.28, 126,581.09 and 77,350.42 is: 116,127.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,313.28 : 126,581.09 = 77,350.42 : x
  2. Step 2: Convert to fraction form
    84,313.28/126,581.09 = 77,350.42/x
  3. Step 3: Cross multiply
    84,313.28x = 126,581.09 × 77,350.42
  4. Step 4: Simplify right side
    84,313.28x = 9,791,100,475.56
  5. Step 5: Solve for x
    x = 9,791,100,475.56/84,313.28
  6. Step 6: Final answer
    x = 116,127.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.