Home / 81,271.06-121,876.27-27,947.95

Finding the Fourth Proportional to 81,271.06, 121,876.27 and 27,947.95

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Solution

The fourth proportional to 81,271.06, 121,876.27 and 27,947.95 is: 41,911.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,271.06 : 121,876.27 = 27,947.95 : x
  2. Step 2: Convert to fraction form
    81,271.06/121,876.27 = 27,947.95/x
  3. Step 3: Cross multiply
    81,271.06x = 121,876.27 × 27,947.95
  4. Step 4: Simplify right side
    81,271.06x = 3,406,191,900.15
  5. Step 5: Solve for x
    x = 3,406,191,900.15/81,271.06
  6. Step 6: Final answer
    x = 41,911.50

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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.