Home / 45,390.33-68,084.91-20,412.72

Finding the Fourth Proportional to 45,390.33, 68,084.91 and 20,412.72

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Solution

The fourth proportional to 45,390.33, 68,084.91 and 20,412.72 is: 30,618.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,390.33 : 68,084.91 = 20,412.72 : x
  2. Step 2: Convert to fraction form
    45,390.33/68,084.91 = 20,412.72/x
  3. Step 3: Cross multiply
    45,390.33x = 68,084.91 × 20,412.72
  4. Step 4: Simplify right side
    45,390.33x = 1,389,798,204.06
  5. Step 5: Solve for x
    x = 1,389,798,204.06/45,390.33
  6. Step 6: Final answer
    x = 30,618.82

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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.