Home / 86,979.94-120,032.31-49,261.48

Finding the Fourth Proportional to 86,979.94, 120,032.31 and 49,261.48

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Solution

The fourth proportional to 86,979.94, 120,032.31 and 49,261.48 is: 67,980.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,979.94 : 120,032.31 = 49,261.48 : x
  2. Step 2: Convert to fraction form
    86,979.94/120,032.31 = 49,261.48/x
  3. Step 3: Cross multiply
    86,979.94x = 120,032.31 × 49,261.48
  4. Step 4: Simplify right side
    86,979.94x = 5,912,969,123.07
  5. Step 5: Solve for x
    x = 5,912,969,123.07/86,979.94
  6. Step 6: Final answer
    x = 67,980.84

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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.