Home / 82,880.10-124,320.02-20,550.60

Finding the Fourth Proportional to 82,880.10, 124,320.02 and 20,550.60

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Solution

The fourth proportional to 82,880.10, 124,320.02 and 20,550.60 is: 30,825.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,880.10 : 124,320.02 = 20,550.60 : x
  2. Step 2: Convert to fraction form
    82,880.10/124,320.02 = 20,550.60/x
  3. Step 3: Cross multiply
    82,880.10x = 124,320.02 × 20,550.60
  4. Step 4: Simplify right side
    82,880.10x = 2,554,850,900.26
  5. Step 5: Solve for x
    x = 2,554,850,900.26/82,880.10
  6. Step 6: Final answer
    x = 30,825.87

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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.