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Finding the Fourth Proportional to 52,660.34, 72,670.80 and 28,786.94

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Solution

The fourth proportional to 52,660.34, 72,670.80 and 28,786.94 is: 39,725.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,660.34 : 72,670.80 = 28,786.94 : x
  2. Step 2: Convert to fraction form
    52,660.34/72,670.80 = 28,786.94/x
  3. Step 3: Cross multiply
    52,660.34x = 72,670.80 × 28,786.94
  4. Step 4: Simplify right side
    52,660.34x = 2,091,969,976.46
  5. Step 5: Solve for x
    x = 2,091,969,976.46/52,660.34
  6. Step 6: Final answer
    x = 39,725.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.