Home / 81,166.95-121,749.03-31,257.90

Finding the Fourth Proportional to 81,166.95, 121,749.03 and 31,257.90

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Solution

The fourth proportional to 81,166.95, 121,749.03 and 31,257.90 is: 46,886.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,166.95 : 121,749.03 = 31,257.90 : x
  2. Step 2: Convert to fraction form
    81,166.95/121,749.03 = 31,257.90/x
  3. Step 3: Cross multiply
    81,166.95x = 121,749.03 × 31,257.90
  4. Step 4: Simplify right side
    81,166.95x = 3,805,619,004.84
  5. Step 5: Solve for x
    x = 3,805,619,004.84/81,166.95
  6. Step 6: Final answer
    x = 46,886.31

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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.