Home / 80,532,005.20-120,798,007.80-40,221,221.20

Finding the Fourth Proportional to 80,532,005.20, 120,798,007.80 and 40,221,221.20

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Solution

The fourth proportional to 80,532,005.20, 120,798,007.80 and 40,221,221.20 is: 60,331,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,532,005.20 : 120,798,007.80 = 40,221,221.20 : x
  2. Step 2: Convert to fraction form
    80,532,005.20/120,798,007.80 = 40,221,221.20/x
  3. Step 3: Cross multiply
    80,532,005.20x = 120,798,007.80 × 40,221,221.20
  4. Step 4: Simplify right side
    80,532,005.20x = 4,858,643,392,243,126
  5. Step 5: Solve for x
    x = 4,858,643,392,243,126/80,532,005.20
  6. Step 6: Final answer
    x = 60,331,831.80

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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.