Home / 81,037.47-111,697.86-54,170.18

Finding the Fourth Proportional to 81,037.47, 111,697.86 and 54,170.18

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Solution

The fourth proportional to 81,037.47, 111,697.86 and 54,170.18 is: 74,665.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,037.47 : 111,697.86 = 54,170.18 : x
  2. Step 2: Convert to fraction form
    81,037.47/111,697.86 = 54,170.18/x
  3. Step 3: Cross multiply
    81,037.47x = 111,697.86 × 54,170.18
  4. Step 4: Simplify right side
    81,037.47x = 6,050,693,245.33
  5. Step 5: Solve for x
    x = 6,050,693,245.33/81,037.47
  6. Step 6: Final answer
    x = 74,665.37

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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.