Home / 80,831.80-121,247.70-36,508.60

Finding the Fourth Proportional to 80,831.80, 121,247.70 and 36,508.60

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Solution

The fourth proportional to 80,831.80, 121,247.70 and 36,508.60 is: 54,762.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,831.80 : 121,247.70 = 36,508.60 : x
  2. Step 2: Convert to fraction form
    80,831.80/121,247.70 = 36,508.60/x
  3. Step 3: Cross multiply
    80,831.80x = 121,247.70 × 36,508.60
  4. Step 4: Simplify right side
    80,831.80x = 4,426,583,780.22
  5. Step 5: Solve for x
    x = 4,426,583,780.22/80,831.80
  6. Step 6: Final answer
    x = 54,762.90

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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.