Home / 86,477.09-129,654.36-38,419.30

Finding the Fourth Proportional to 86,477.09, 129,654.36 and 38,419.30

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Solution

The fourth proportional to 86,477.09, 129,654.36 and 38,419.30 is: 57,601.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,477.09 : 129,654.36 = 38,419.30 : x
  2. Step 2: Convert to fraction form
    86,477.09/129,654.36 = 38,419.30/x
  3. Step 3: Cross multiply
    86,477.09x = 129,654.36 × 38,419.30
  4. Step 4: Simplify right side
    86,477.09x = 4,981,229,753.15
  5. Step 5: Solve for x
    x = 4,981,229,753.15/86,477.09
  6. Step 6: Final answer
    x = 57,601.73

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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.