Home / 81,289.92-121,946.51-25,134.38

Finding the Fourth Proportional to 81,289.92, 121,946.51 and 25,134.38

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Solution

The fourth proportional to 81,289.92, 121,946.51 and 25,134.38 is: 37,705.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,289.92 : 121,946.51 = 25,134.38 : x
  2. Step 2: Convert to fraction form
    81,289.92/121,946.51 = 25,134.38/x
  3. Step 3: Cross multiply
    81,289.92x = 121,946.51 × 25,134.38
  4. Step 4: Simplify right side
    81,289.92x = 3,065,049,186.61
  5. Step 5: Solve for x
    x = 3,065,049,186.61/81,289.92
  6. Step 6: Final answer
    x = 37,705.16

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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.