Home / 81,192.98-121,804.60-28,635.86

Finding the Fourth Proportional to 81,192.98, 121,804.60 and 28,635.86

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Solution

The fourth proportional to 81,192.98, 121,804.60 and 28,635.86 is: 42,959.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,192.98 : 121,804.60 = 28,635.86 : x
  2. Step 2: Convert to fraction form
    81,192.98/121,804.60 = 28,635.86/x
  3. Step 3: Cross multiply
    81,192.98x = 121,804.60 × 28,635.86
  4. Step 4: Simplify right side
    81,192.98x = 3,487,979,472.96
  5. Step 5: Solve for x
    x = 3,487,979,472.96/81,192.98
  6. Step 6: Final answer
    x = 42,959.13

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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.