Home / 88,171.88-121,678.09-47,886.43

Finding the Fourth Proportional to 88,171.88, 121,678.09 and 47,886.43

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Solution

The fourth proportional to 88,171.88, 121,678.09 and 47,886.43 is: 66,083.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,171.88 : 121,678.09 = 47,886.43 : x
  2. Step 2: Convert to fraction form
    88,171.88/121,678.09 = 47,886.43/x
  3. Step 3: Cross multiply
    88,171.88x = 121,678.09 × 47,886.43
  4. Step 4: Simplify right side
    88,171.88x = 5,826,729,339.32
  5. Step 5: Solve for x
    x = 5,826,729,339.32/88,171.88
  6. Step 6: Final answer
    x = 66,083.76

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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.