Home / 30,608.28-42,239.88-29,548.80

Finding the Fourth Proportional to 30,608.28, 42,239.88 and 29,548.80

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Solution

The fourth proportional to 30,608.28, 42,239.88 and 29,548.80 is: 40,777.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,608.28 : 42,239.88 = 29,548.80 : x
  2. Step 2: Convert to fraction form
    30,608.28/42,239.88 = 29,548.80/x
  3. Step 3: Cross multiply
    30,608.28x = 42,239.88 × 29,548.80
  4. Step 4: Simplify right side
    30,608.28x = 1,248,137,766.14
  5. Step 5: Solve for x
    x = 1,248,137,766.14/30,608.28
  6. Step 6: Final answer
    x = 40,777.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.