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Finding the Fourth Proportional to 60,255.92, 90,323.72 and 20,787.86

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Solution

The fourth proportional to 60,255.92, 90,323.72 and 20,787.86 is: 31,161.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,255.92 : 90,323.72 = 20,787.86 : x
  2. Step 2: Convert to fraction form
    60,255.92/90,323.72 = 20,787.86/x
  3. Step 3: Cross multiply
    60,255.92x = 90,323.72 × 20,787.86
  4. Step 4: Simplify right side
    60,255.92x = 1,877,636,846.04
  5. Step 5: Solve for x
    x = 1,877,636,846.04/60,255.92
  6. Step 6: Final answer
    x = 31,161.04

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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.