Home / 81,010.92-121,432.98-31,077.72

Finding the Fourth Proportional to 81,010.92, 121,432.98 and 31,077.72

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Solution

The fourth proportional to 81,010.92, 121,432.98 and 31,077.72 is: 46,584.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,010.92 : 121,432.98 = 31,077.72 : x
  2. Step 2: Convert to fraction form
    81,010.92/121,432.98 = 31,077.72/x
  3. Step 3: Cross multiply
    81,010.92x = 121,432.98 × 31,077.72
  4. Step 4: Simplify right side
    81,010.92x = 3,773,860,151.21
  5. Step 5: Solve for x
    x = 3,773,860,151.21/81,010.92
  6. Step 6: Final answer
    x = 46,584.59

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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.