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Finding the Fourth Proportional to 86,620.38, 129,982.40 and 37,372.38

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Solution

The fourth proportional to 86,620.38, 129,982.40 and 37,372.38 is: 56,080.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,620.38 : 129,982.40 = 37,372.38 : x
  2. Step 2: Convert to fraction form
    86,620.38/129,982.40 = 37,372.38/x
  3. Step 3: Cross multiply
    86,620.38x = 129,982.40 × 37,372.38
  4. Step 4: Simplify right side
    86,620.38x = 4,857,751,646.11
  5. Step 5: Solve for x
    x = 4,857,751,646.11/86,620.38
  6. Step 6: Final answer
    x = 56,080.93

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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.