Home / 80,535.21-111,128.53-44,720.35

Finding the Fourth Proportional to 80,535.21, 111,128.53 and 44,720.35

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Solution

The fourth proportional to 80,535.21, 111,128.53 and 44,720.35 is: 61,708.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,535.21 : 111,128.53 = 44,720.35 : x
  2. Step 2: Convert to fraction form
    80,535.21/111,128.53 = 44,720.35/x
  3. Step 3: Cross multiply
    80,535.21x = 111,128.53 × 44,720.35
  4. Step 4: Simplify right side
    80,535.21x = 4,969,707,201.69
  5. Step 5: Solve for x
    x = 4,969,707,201.69/80,535.21
  6. Step 6: Final answer
    x = 61,708.50

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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.