Home / 77,989.20-116,983.80-44,811.60

Finding the Fourth Proportional to 77,989.20, 116,983.80 and 44,811.60

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Solution

The fourth proportional to 77,989.20, 116,983.80 and 44,811.60 is: 67,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,989.20 : 116,983.80 = 44,811.60 : x
  2. Step 2: Convert to fraction form
    77,989.20/116,983.80 = 44,811.60/x
  3. Step 3: Cross multiply
    77,989.20x = 116,983.80 × 44,811.60
  4. Step 4: Simplify right side
    77,989.20x = 5,242,231,252.08
  5. Step 5: Solve for x
    x = 5,242,231,252.08/77,989.20
  6. Step 6: Final answer
    x = 67,217.40

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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.