Home / 81,150.26-111,985.28-45,340.56

Finding the Fourth Proportional to 81,150.26, 111,985.28 and 45,340.56

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Solution

The fourth proportional to 81,150.26, 111,985.28 and 45,340.56 is: 62,568.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,150.26 : 111,985.28 = 45,340.56 : x
  2. Step 2: Convert to fraction form
    81,150.26/111,985.28 = 45,340.56/x
  3. Step 3: Cross multiply
    81,150.26x = 111,985.28 × 45,340.56
  4. Step 4: Simplify right side
    81,150.26x = 5,077,475,306.96
  5. Step 5: Solve for x
    x = 5,077,475,306.96/81,150.26
  6. Step 6: Final answer
    x = 62,568.81

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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.