Home / 42,942.80-64,414.20-25,403.60

Finding the Fourth Proportional to 42,942.80, 64,414.20 and 25,403.60

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Solution

The fourth proportional to 42,942.80, 64,414.20 and 25,403.60 is: 38,105.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,942.80 : 64,414.20 = 25,403.60 : x
  2. Step 2: Convert to fraction form
    42,942.80/64,414.20 = 25,403.60/x
  3. Step 3: Cross multiply
    42,942.80x = 64,414.20 × 25,403.60
  4. Step 4: Simplify right side
    42,942.80x = 1,636,352,571.12
  5. Step 5: Solve for x
    x = 1,636,352,571.12/42,942.80
  6. Step 6: Final answer
    x = 38,105.40

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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.