Home / 55,171.84-76,136.40-30,021.28

Finding the Fourth Proportional to 55,171.84, 76,136.40 and 30,021.28

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Solution

The fourth proportional to 55,171.84, 76,136.40 and 30,021.28 is: 41,428.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,171.84 : 76,136.40 = 30,021.28 : x
  2. Step 2: Convert to fraction form
    55,171.84/76,136.40 = 30,021.28/x
  3. Step 3: Cross multiply
    55,171.84x = 76,136.40 × 30,021.28
  4. Step 4: Simplify right side
    55,171.84x = 2,285,712,182.59
  5. Step 5: Solve for x
    x = 2,285,712,182.59/55,171.84
  6. Step 6: Final answer
    x = 41,428.96

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1.5x scale

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.