Home / 87,770.46-121,136.81-57,643.19

Finding the Fourth Proportional to 87,770.46, 121,136.81 and 57,643.19

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Solution

The fourth proportional to 87,770.46, 121,136.81 and 57,643.19 is: 79,556.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,770.46 : 121,136.81 = 57,643.19 : x
  2. Step 2: Convert to fraction form
    87,770.46/121,136.81 = 57,643.19/x
  3. Step 3: Cross multiply
    87,770.46x = 121,136.81 × 57,643.19
  4. Step 4: Simplify right side
    87,770.46x = 6,982,711,260.92
  5. Step 5: Solve for x
    x = 6,982,711,260.92/87,770.46
  6. Step 6: Final answer
    x = 79,556.51

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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.