Home / 81,394.16-121,872.48-51,650.96

Finding the Fourth Proportional to 81,394.16, 121,872.48 and 51,650.96

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Solution

The fourth proportional to 81,394.16, 121,872.48 and 51,650.96 is: 77,337.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,394.16 : 121,872.48 = 51,650.96 : x
  2. Step 2: Convert to fraction form
    81,394.16/121,872.48 = 51,650.96/x
  3. Step 3: Cross multiply
    81,394.16x = 121,872.48 × 51,650.96
  4. Step 4: Simplify right side
    81,394.16x = 6,294,830,589.58
  5. Step 5: Solve for x
    x = 6,294,830,589.58/81,394.16
  6. Step 6: Final answer
    x = 77,337.62

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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.