Home / 45,991.20-68,972.20-19,688.88

Finding the Fourth Proportional to 45,991.20, 68,972.20 and 19,688.88

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Solution

The fourth proportional to 45,991.20, 68,972.20 and 19,688.88 is: 29,527.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,991.20 : 68,972.20 = 19,688.88 : x
  2. Step 2: Convert to fraction form
    45,991.20/68,972.20 = 19,688.88/x
  3. Step 3: Cross multiply
    45,991.20x = 68,972.20 × 19,688.88
  4. Step 4: Simplify right side
    45,991.20x = 1,357,985,369.14
  5. Step 5: Solve for x
    x = 1,357,985,369.14/45,991.20
  6. Step 6: Final answer
    x = 29,527.07

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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.