Home / 81,326.40-112,268.52-61,190.82

Finding the Fourth Proportional to 81,326.40, 112,268.52 and 61,190.82

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Solution

The fourth proportional to 81,326.40, 112,268.52 and 61,190.82 is: 84,471.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,326.40 : 112,268.52 = 61,190.82 : x
  2. Step 2: Convert to fraction form
    81,326.40/112,268.52 = 61,190.82/x
  3. Step 3: Cross multiply
    81,326.40x = 112,268.52 × 61,190.82
  4. Step 4: Simplify right side
    81,326.40x = 6,869,802,798.99
  5. Step 5: Solve for x
    x = 6,869,802,798.99/81,326.40
  6. Step 6: Final answer
    x = 84,471.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.