Home / 83,280.36-124,813.20-72,563.28

Finding the Fourth Proportional to 83,280.36, 124,813.20 and 72,563.28

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Solution

The fourth proportional to 83,280.36, 124,813.20 and 72,563.28 is: 108,751.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,280.36 : 124,813.20 = 72,563.28 : x
  2. Step 2: Convert to fraction form
    83,280.36/124,813.20 = 72,563.28/x
  3. Step 3: Cross multiply
    83,280.36x = 124,813.20 × 72,563.28
  4. Step 4: Simplify right side
    83,280.36x = 9,056,855,179.30
  5. Step 5: Solve for x
    x = 9,056,855,179.30/83,280.36
  6. Step 6: Final answer
    x = 108,751.39

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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.