Home / 45,147.31-67,721.63-21,457.27

Finding the Fourth Proportional to 45,147.31, 67,721.63 and 21,457.27

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Solution

The fourth proportional to 45,147.31, 67,721.63 and 21,457.27 is: 32,186.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,147.31 : 67,721.63 = 21,457.27 : x
  2. Step 2: Convert to fraction form
    45,147.31/67,721.63 = 21,457.27/x
  3. Step 3: Cross multiply
    45,147.31x = 67,721.63 × 21,457.27
  4. Step 4: Simplify right side
    45,147.31x = 1,453,121,415.43
  5. Step 5: Solve for x
    x = 1,453,121,415.43/45,147.31
  6. Step 6: Final answer
    x = 32,186.22

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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.