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Finding the Fourth Proportional to 60,122.72, 90,195.42 and 18,560

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Solution

The fourth proportional to 60,122.72, 90,195.42 and 18,560 is: 27,843.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,122.72 : 90,195.42 = 18,560 : x
  2. Step 2: Convert to fraction form
    60,122.72/90,195.42 = 18,560/x
  3. Step 3: Cross multiply
    60,122.72x = 90,195.42 × 18,560
  4. Step 4: Simplify right side
    60,122.72x = 1,674,026,995.20
  5. Step 5: Solve for x
    x = 1,674,026,995.20/60,122.72
  6. Step 6: Final answer
    x = 27,843.50

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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.