Home / 81,284.93-121,939.04-25,129.93

Finding the Fourth Proportional to 81,284.93, 121,939.04 and 25,129.93

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Solution

The fourth proportional to 81,284.93, 121,939.04 and 25,129.93 is: 37,698.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,284.93 : 121,939.04 = 25,129.93 : x
  2. Step 2: Convert to fraction form
    81,284.93/121,939.04 = 25,129.93/x
  3. Step 3: Cross multiply
    81,284.93x = 121,939.04 × 25,129.93
  4. Step 4: Simplify right side
    81,284.93x = 3,064,318,804.12
  5. Step 5: Solve for x
    x = 3,064,318,804.12/81,284.93
  6. Step 6: Final answer
    x = 37,698.49

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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.