Home / 80,887.32-111,549.49-55,430.64

Finding the Fourth Proportional to 80,887.32, 111,549.49 and 55,430.64

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Solution

The fourth proportional to 80,887.32, 111,549.49 and 55,430.64 is: 76,442.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,887.32 : 111,549.49 = 55,430.64 : x
  2. Step 2: Convert to fraction form
    80,887.32/111,549.49 = 55,430.64/x
  3. Step 3: Cross multiply
    80,887.32x = 111,549.49 × 55,430.64
  4. Step 4: Simplify right side
    80,887.32x = 6,183,259,483.80
  5. Step 5: Solve for x
    x = 6,183,259,483.80/80,887.32
  6. Step 6: Final answer
    x = 76,442.88

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1.5x scale

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.