Home / 80,465.40-120,786.39-63,931.68

Finding the Fourth Proportional to 80,465.40, 120,786.39 and 63,931.68

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Solution

The fourth proportional to 80,465.40, 120,786.39 and 63,931.68 is: 95,967.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,465.40 : 120,786.39 = 63,931.68 : x
  2. Step 2: Convert to fraction form
    80,465.40/120,786.39 = 63,931.68/x
  3. Step 3: Cross multiply
    80,465.40x = 120,786.39 × 63,931.68
  4. Step 4: Simplify right side
    80,465.40x = 7,722,076,833.84
  5. Step 5: Solve for x
    x = 7,722,076,833.84/80,465.40
  6. Step 6: Final answer
    x = 95,967.67

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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.