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Finding the Fourth Proportional to 79,753.74, 119,627.52 and 19,782.38

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Solution

The fourth proportional to 79,753.74, 119,627.52 and 19,782.38 is: 29,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,753.74 : 119,627.52 = 19,782.38 : x
  2. Step 2: Convert to fraction form
    79,753.74/119,627.52 = 19,782.38/x
  3. Step 3: Cross multiply
    79,753.74x = 119,627.52 × 19,782.38
  4. Step 4: Simplify right side
    79,753.74x = 2,366,516,460.96
  5. Step 5: Solve for x
    x = 2,366,516,460.96/79,753.74
  6. Step 6: Final answer
    x = 29,672.80

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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.