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Finding the Fourth Proportional to 84,969.31, 127,379.45 and 32,343.79

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Solution

The fourth proportional to 84,969.31, 127,379.45 and 32,343.79 is: 48,487.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,969.31 : 127,379.45 = 32,343.79 : x
  2. Step 2: Convert to fraction form
    84,969.31/127,379.45 = 32,343.79/x
  3. Step 3: Cross multiply
    84,969.31x = 127,379.45 × 32,343.79
  4. Step 4: Simplify right side
    84,969.31x = 4,119,934,019.40
  5. Step 5: Solve for x
    x = 4,119,934,019.40/84,969.31
  6. Step 6: Final answer
    x = 48,487.32

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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.