Home / 81,149.77-111,984.63-45,340.05

Finding the Fourth Proportional to 81,149.77, 111,984.63 and 45,340.05

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Solution

The fourth proportional to 81,149.77, 111,984.63 and 45,340.05 is: 62,568.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,149.77 : 111,984.63 = 45,340.05 : x
  2. Step 2: Convert to fraction form
    81,149.77/111,984.63 = 45,340.05/x
  3. Step 3: Cross multiply
    81,149.77x = 111,984.63 × 45,340.05
  4. Step 4: Simplify right side
    81,149.77x = 5,077,388,973.35
  5. Step 5: Solve for x
    x = 5,077,388,973.35/81,149.77
  6. Step 6: Final answer
    x = 62,568.13

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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.