Home / 80,765.64-111,367.08-55,276.02

Finding the Fourth Proportional to 80,765.64, 111,367.08 and 55,276.02

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Solution

The fourth proportional to 80,765.64, 111,367.08 and 55,276.02 is: 76,219.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,765.64 : 111,367.08 = 55,276.02 : x
  2. Step 2: Convert to fraction form
    80,765.64/111,367.08 = 55,276.02/x
  3. Step 3: Cross multiply
    80,765.64x = 111,367.08 × 55,276.02
  4. Step 4: Simplify right side
    80,765.64x = 6,155,928,941.42
  5. Step 5: Solve for x
    x = 6,155,928,941.42/80,765.64
  6. Step 6: Final answer
    x = 76,219.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.