Home / 81,382.47-112,346.73-54,203.75

Finding the Fourth Proportional to 81,382.47, 112,346.73 and 54,203.75

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Solution

The fourth proportional to 81,382.47, 112,346.73 and 54,203.75 is: 74,827.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,382.47 : 112,346.73 = 54,203.75 : x
  2. Step 2: Convert to fraction form
    81,382.47/112,346.73 = 54,203.75/x
  3. Step 3: Cross multiply
    81,382.47x = 112,346.73 × 54,203.75
  4. Step 4: Simplify right side
    81,382.47x = 6,089,613,795.22
  5. Step 5: Solve for x
    x = 6,089,613,795.22/81,382.47
  6. Step 6: Final answer
    x = 74,827.10

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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.