Home / 64,831.20-89,378.28-40,945.92

Finding the Fourth Proportional to 64,831.20, 89,378.28 and 40,945.92

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Solution

The fourth proportional to 64,831.20, 89,378.28 and 40,945.92 is: 56,449.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,831.20 : 89,378.28 = 40,945.92 : x
  2. Step 2: Convert to fraction form
    64,831.20/89,378.28 = 40,945.92/x
  3. Step 3: Cross multiply
    64,831.20x = 89,378.28 × 40,945.92
  4. Step 4: Simplify right side
    64,831.20x = 3,659,675,902.62
  5. Step 5: Solve for x
    x = 3,659,675,902.62/64,831.20
  6. Step 6: Final answer
    x = 56,449.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.