Home / 45,090.40-67,578.09-21,397.90

Finding the Fourth Proportional to 45,090.40, 67,578.09 and 21,397.90

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Solution

The fourth proportional to 45,090.40, 67,578.09 and 21,397.90 is: 32,069.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,090.40 : 67,578.09 = 21,397.90 : x
  2. Step 2: Convert to fraction form
    45,090.40/67,578.09 = 21,397.90/x
  3. Step 3: Cross multiply
    45,090.40x = 67,578.09 × 21,397.90
  4. Step 4: Simplify right side
    45,090.40x = 1,446,029,212.01
  5. Step 5: Solve for x
    x = 1,446,029,212.01/45,090.40
  6. Step 6: Final answer
    x = 32,069.56

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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.