Home / 76,831.20-115,262.19-32,457.78

Finding the Fourth Proportional to 76,831.20, 115,262.19 and 32,457.78

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Solution

The fourth proportional to 76,831.20, 115,262.19 and 32,457.78 is: 48,693.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,831.20 : 115,262.19 = 32,457.78 : x
  2. Step 2: Convert to fraction form
    76,831.20/115,262.19 = 32,457.78/x
  3. Step 3: Cross multiply
    76,831.20x = 115,262.19 × 32,457.78
  4. Step 4: Simplify right side
    76,831.20x = 3,741,154,805.34
  5. Step 5: Solve for x
    x = 3,741,154,805.34/76,831.20
  6. Step 6: Final answer
    x = 48,693.17

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1.5x scale

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.