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Finding the Fourth Proportional to 77,580.96, 116,371.26 and 20,654.88

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Solution

The fourth proportional to 77,580.96, 116,371.26 and 20,654.88 is: 30,982.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,580.96 : 116,371.26 = 20,654.88 : x
  2. Step 2: Convert to fraction form
    77,580.96/116,371.26 = 20,654.88/x
  3. Step 3: Cross multiply
    77,580.96x = 116,371.26 × 20,654.88
  4. Step 4: Simplify right side
    77,580.96x = 2,403,634,488.20
  5. Step 5: Solve for x
    x = 2,403,634,488.20/77,580.96
  6. Step 6: Final answer
    x = 30,982.27

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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.