Home / 81,310.37-121,966.46-28,682.94

Finding the Fourth Proportional to 81,310.37, 121,966.46 and 28,682.94

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Solution

The fourth proportional to 81,310.37, 121,966.46 and 28,682.94 is: 43,024.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,310.37 : 121,966.46 = 28,682.94 : x
  2. Step 2: Convert to fraction form
    81,310.37/121,966.46 = 28,682.94/x
  3. Step 3: Cross multiply
    81,310.37x = 121,966.46 × 28,682.94
  4. Step 4: Simplify right side
    81,310.37x = 3,498,357,075.71
  5. Step 5: Solve for x
    x = 3,498,357,075.71/81,310.37
  6. Step 6: Final answer
    x = 43,024.74

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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.