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Finding the Fourth Proportional to 57,980.29, 86,980.82 and 29,892.81

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Solution

The fourth proportional to 57,980.29, 86,980.82 and 29,892.81 is: 44,844.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,980.29 : 86,980.82 = 29,892.81 : x
  2. Step 2: Convert to fraction form
    57,980.29/86,980.82 = 29,892.81/x
  3. Step 3: Cross multiply
    57,980.29x = 86,980.82 × 29,892.81
  4. Step 4: Simplify right side
    57,980.29x = 2,600,101,125.90
  5. Step 5: Solve for x
    x = 2,600,101,125.90/57,980.29
  6. Step 6: Final answer
    x = 44,844.57

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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.