Home / 81,064.76-121,591.04-28,474.70

Finding the Fourth Proportional to 81,064.76, 121,591.04 and 28,474.70

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Solution

The fourth proportional to 81,064.76, 121,591.04 and 28,474.70 is: 42,709.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,064.76 : 121,591.04 = 28,474.70 : x
  2. Step 2: Convert to fraction form
    81,064.76/121,591.04 = 28,474.70/x
  3. Step 3: Cross multiply
    81,064.76x = 121,591.04 × 28,474.70
  4. Step 4: Simplify right side
    81,064.76x = 3,462,268,386.69
  5. Step 5: Solve for x
    x = 3,462,268,386.69/81,064.76
  6. Step 6: Final answer
    x = 42,709.91

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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.