Home / 81,285.56-121,939.98-25,130.55

Finding the Fourth Proportional to 81,285.56, 121,939.98 and 25,130.55

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Solution

The fourth proportional to 81,285.56, 121,939.98 and 25,130.55 is: 37,699.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,285.56 : 121,939.98 = 25,130.55 : x
  2. Step 2: Convert to fraction form
    81,285.56/121,939.98 = 25,130.55/x
  3. Step 3: Cross multiply
    81,285.56x = 121,939.98 × 25,130.55
  4. Step 4: Simplify right side
    81,285.56x = 3,064,418,764.39
  5. Step 5: Solve for x
    x = 3,064,418,764.39/81,285.56
  6. Step 6: Final answer
    x = 37,699.42

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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.