Home / 55,171.20-76,136-30,020.48

Finding the Fourth Proportional to 55,171.20, 76,136 and 30,020.48

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Solution

The fourth proportional to 55,171.20, 76,136 and 30,020.48 is: 41,428.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,171.20 : 76,136 = 30,020.48 : x
  2. Step 2: Convert to fraction form
    55,171.20/76,136 = 30,020.48/x
  3. Step 3: Cross multiply
    55,171.20x = 76,136 × 30,020.48
  4. Step 4: Simplify right side
    55,171.20x = 2,285,639,265.28
  5. Step 5: Solve for x
    x = 2,285,639,265.28/55,171.20
  6. Step 6: Final answer
    x = 41,428.12

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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.