Home / 80,289.60-120,434.40-50,740.80

Finding the Fourth Proportional to 80,289.60, 120,434.40 and 50,740.80

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Solution

The fourth proportional to 80,289.60, 120,434.40 and 50,740.80 is: 76,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,289.60 : 120,434.40 = 50,740.80 : x
  2. Step 2: Convert to fraction form
    80,289.60/120,434.40 = 50,740.80/x
  3. Step 3: Cross multiply
    80,289.60x = 120,434.40 × 50,740.80
  4. Step 4: Simplify right side
    80,289.60x = 6,110,937,803.52
  5. Step 5: Solve for x
    x = 6,110,937,803.52/80,289.60
  6. Step 6: Final answer
    x = 76,111.20

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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.