Home / 47,991.28-71,987.36-18,402.08

Finding the Fourth Proportional to 47,991.28, 71,987.36 and 18,402.08

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Solution

The fourth proportional to 47,991.28, 71,987.36 and 18,402.08 is: 27,603.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,991.28 : 71,987.36 = 18,402.08 : x
  2. Step 2: Convert to fraction form
    47,991.28/71,987.36 = 18,402.08/x
  3. Step 3: Cross multiply
    47,991.28x = 71,987.36 × 18,402.08
  4. Step 4: Simplify right side
    47,991.28x = 1,324,717,157.71
  5. Step 5: Solve for x
    x = 1,324,717,157.71/47,991.28
  6. Step 6: Final answer
    x = 27,603.29

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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.