Home / 42,672.30-64,008.45-20,480.33

Finding the Fourth Proportional to 42,672.30, 64,008.45 and 20,480.33

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Solution

The fourth proportional to 42,672.30, 64,008.45 and 20,480.33 is: 30,720.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,672.30 : 64,008.45 = 20,480.33 : x
  2. Step 2: Convert to fraction form
    42,672.30/64,008.45 = 20,480.33/x
  3. Step 3: Cross multiply
    42,672.30x = 64,008.45 × 20,480.33
  4. Step 4: Simplify right side
    42,672.30x = 1,310,913,858.75
  5. Step 5: Solve for x
    x = 1,310,913,858.75/42,672.30
  6. Step 6: Final answer
    x = 30,720.49

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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.