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Finding the Fourth Proportional to 70,614.38, 105,921.47 and 18,023.87

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Solution

The fourth proportional to 70,614.38, 105,921.47 and 18,023.87 is: 27,035.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,614.38 : 105,921.47 = 18,023.87 : x
  2. Step 2: Convert to fraction form
    70,614.38/105,921.47 = 18,023.87/x
  3. Step 3: Cross multiply
    70,614.38x = 105,921.47 × 18,023.87
  4. Step 4: Simplify right side
    70,614.38x = 1,909,114,185.76
  5. Step 5: Solve for x
    x = 1,909,114,185.76/70,614.38
  6. Step 6: Final answer
    x = 27,035.77

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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.