Home / 81,972.80-113,174.76-66,901.46

Finding the Fourth Proportional to 81,972.80, 113,174.76 and 66,901.46

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Solution

The fourth proportional to 81,972.80, 113,174.76 and 66,901.46 is: 92,366.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,972.80 : 113,174.76 = 66,901.46 : x
  2. Step 2: Convert to fraction form
    81,972.80/113,174.76 = 66,901.46/x
  3. Step 3: Cross multiply
    81,972.80x = 113,174.76 × 66,901.46
  4. Step 4: Simplify right side
    81,972.80x = 7,571,556,113.28
  5. Step 5: Solve for x
    x = 7,571,556,113.28/81,972.80
  6. Step 6: Final answer
    x = 92,366.69

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1.5x scale

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.