Home / 81,094.23-121,628.13-28,491.41

Finding the Fourth Proportional to 81,094.23, 121,628.13 and 28,491.41

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Solution

The fourth proportional to 81,094.23, 121,628.13 and 28,491.41 is: 42,732.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,094.23 : 121,628.13 = 28,491.41 : x
  2. Step 2: Convert to fraction form
    81,094.23/121,628.13 = 28,491.41/x
  3. Step 3: Cross multiply
    81,094.23x = 121,628.13 × 28,491.41
  4. Step 4: Simplify right side
    81,094.23x = 3,465,356,919.36
  5. Step 5: Solve for x
    x = 3,465,356,919.36/81,094.23
  6. Step 6: Final answer
    x = 42,732.47

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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.