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Finding the Fourth Proportional to 35,885.78, 49,519.17 and 20,779.46

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Solution

The fourth proportional to 35,885.78, 49,519.17 and 20,779.46 is: 28,673.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,885.78 : 49,519.17 = 20,779.46 : x
  2. Step 2: Convert to fraction form
    35,885.78/49,519.17 = 20,779.46/x
  3. Step 3: Cross multiply
    35,885.78x = 49,519.17 × 20,779.46
  4. Step 4: Simplify right side
    35,885.78x = 1,028,981,612.25
  5. Step 5: Solve for x
    x = 1,028,981,612.25/35,885.78
  6. Step 6: Final answer
    x = 28,673.80

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1.5x scale

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.