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Finding the Fourth Proportional to 60,390.96, 90,586.45 and 18,837.96

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Solution

The fourth proportional to 60,390.96, 90,586.45 and 18,837.96 is: 28,256.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,390.96 : 90,586.45 = 18,837.96 : x
  2. Step 2: Convert to fraction form
    60,390.96/90,586.45 = 18,837.96/x
  3. Step 3: Cross multiply
    60,390.96x = 90,586.45 × 18,837.96
  4. Step 4: Simplify right side
    60,390.96x = 1,706,463,764.72
  5. Step 5: Solve for x
    x = 1,706,463,764.72/60,390.96
  6. Step 6: Final answer
    x = 28,256.94

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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.