Home / 81,120.10-111,944.54-45,310.64

Finding the Fourth Proportional to 81,120.10, 111,944.54 and 45,310.64

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Solution

The fourth proportional to 81,120.10, 111,944.54 and 45,310.64 is: 62,528.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,120.10 : 111,944.54 = 45,310.64 : x
  2. Step 2: Convert to fraction form
    81,120.10/111,944.54 = 45,310.64/x
  3. Step 3: Cross multiply
    81,120.10x = 111,944.54 × 45,310.64
  4. Step 4: Simplify right side
    81,120.10x = 5,072,278,751.91
  5. Step 5: Solve for x
    x = 5,072,278,751.91/81,120.10
  6. Step 6: Final answer
    x = 62,528.01

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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.