Home / 81,323.10-121,984.65-28,737.90

Finding the Fourth Proportional to 81,323.10, 121,984.65 and 28,737.90

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Solution

The fourth proportional to 81,323.10, 121,984.65 and 28,737.90 is: 43,106.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,323.10 : 121,984.65 = 28,737.90 : x
  2. Step 2: Convert to fraction form
    81,323.10/121,984.65 = 28,737.90/x
  3. Step 3: Cross multiply
    81,323.10x = 121,984.65 × 28,737.90
  4. Step 4: Simplify right side
    81,323.10x = 3,505,582,673.24
  5. Step 5: Solve for x
    x = 3,505,582,673.24/81,323.10
  6. Step 6: Final answer
    x = 43,106.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.