Home / 81,270.10-121,856.55-41,904.10

Finding the Fourth Proportional to 81,270.10, 121,856.55 and 41,904.10

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Solution

The fourth proportional to 81,270.10, 121,856.55 and 41,904.10 is: 62,831.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,270.10 : 121,856.55 = 41,904.10 : x
  2. Step 2: Convert to fraction form
    81,270.10/121,856.55 = 41,904.10/x
  3. Step 3: Cross multiply
    81,270.10x = 121,856.55 × 41,904.10
  4. Step 4: Simplify right side
    81,270.10x = 5,106,289,056.86
  5. Step 5: Solve for x
    x = 5,106,289,056.86/81,270.10
  6. Step 6: Final answer
    x = 62,831.09

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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.