Home / 42,792.80-64,135.73-20,600.24

Finding the Fourth Proportional to 42,792.80, 64,135.73 and 20,600.24

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Solution

The fourth proportional to 42,792.80, 64,135.73 and 20,600.24 is: 30,874.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,792.80 : 64,135.73 = 20,600.24 : x
  2. Step 2: Convert to fraction form
    42,792.80/64,135.73 = 20,600.24/x
  3. Step 3: Cross multiply
    42,792.80x = 64,135.73 × 20,600.24
  4. Step 4: Simplify right side
    42,792.80x = 1,321,211,006.90
  5. Step 5: Solve for x
    x = 1,321,211,006.90/42,792.80
  6. Step 6: Final answer
    x = 30,874.61

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1.5x scale

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.