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Finding the Fourth Proportional to 51,787.92, 77,628.42 and 28,364.88

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Solution

The fourth proportional to 51,787.92, 77,628.42 and 28,364.88 is: 42,518.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,787.92 : 77,628.42 = 28,364.88 : x
  2. Step 2: Convert to fraction form
    51,787.92/77,628.42 = 28,364.88/x
  3. Step 3: Cross multiply
    51,787.92x = 77,628.42 × 28,364.88
  4. Step 4: Simplify right side
    51,787.92x = 2,201,920,817.89
  5. Step 5: Solve for x
    x = 2,201,920,817.89/51,787.92
  6. Step 6: Final answer
    x = 42,518.04

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1.5x scale

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.