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Finding the Fourth Proportional to 73,679.28, 110,518.80 and 18,275.28

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Solution

The fourth proportional to 73,679.28, 110,518.80 and 18,275.28 is: 27,412.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,679.28 : 110,518.80 = 18,275.28 : x
  2. Step 2: Convert to fraction form
    73,679.28/110,518.80 = 18,275.28/x
  3. Step 3: Cross multiply
    73,679.28x = 110,518.80 × 18,275.28
  4. Step 4: Simplify right side
    73,679.28x = 2,019,762,015.26
  5. Step 5: Solve for x
    x = 2,019,762,015.26/73,679.28
  6. Step 6: Final answer
    x = 27,412.89

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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.