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Finding the Fourth Proportional to 51,660.49, 77,490.74 and 20,495.74

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Solution

The fourth proportional to 51,660.49, 77,490.74 and 20,495.74 is: 30,743.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,660.49 : 77,490.74 = 20,495.74 : x
  2. Step 2: Convert to fraction form
    51,660.49/77,490.74 = 20,495.74/x
  3. Step 3: Cross multiply
    51,660.49x = 77,490.74 × 20,495.74
  4. Step 4: Simplify right side
    51,660.49x = 1,588,230,059.45
  5. Step 5: Solve for x
    x = 1,588,230,059.45/51,660.49
  6. Step 6: Final answer
    x = 30,743.61

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Similar ratio
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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.