Home / 80,659.56-111,310.50-55,465.32

Finding the Fourth Proportional to 80,659.56, 111,310.50 and 55,465.32

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Solution

The fourth proportional to 80,659.56, 111,310.50 and 55,465.32 is: 76,542.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,659.56 : 111,310.50 = 55,465.32 : x
  2. Step 2: Convert to fraction form
    80,659.56/111,310.50 = 55,465.32/x
  3. Step 3: Cross multiply
    80,659.56x = 111,310.50 × 55,465.32
  4. Step 4: Simplify right side
    80,659.56x = 6,173,872,501.86
  5. Step 5: Solve for x
    x = 6,173,872,501.86/80,659.56
  6. Step 6: Final answer
    x = 76,542.35

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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.