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Finding the Fourth Proportional to 60,228.98, 90,355.59 and 20,787.62

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Solution

The fourth proportional to 60,228.98, 90,355.59 and 20,787.62 is: 31,185.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,228.98 : 90,355.59 = 20,787.62 : x
  2. Step 2: Convert to fraction form
    60,228.98/90,355.59 = 20,787.62/x
  3. Step 3: Cross multiply
    60,228.98x = 90,355.59 × 20,787.62
  4. Step 4: Simplify right side
    60,228.98x = 1,878,277,669.80
  5. Step 5: Solve for x
    x = 1,878,277,669.80/60,228.98
  6. Step 6: Final answer
    x = 31,185.61

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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.