Home / 42,919.72-64,393.58-20,735.64

Finding the Fourth Proportional to 42,919.72, 64,393.58 and 20,735.64

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Solution

The fourth proportional to 42,919.72, 64,393.58 and 20,735.64 is: 31,110.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,919.72 : 64,393.58 = 20,735.64 : x
  2. Step 2: Convert to fraction form
    42,919.72/64,393.58 = 20,735.64/x
  3. Step 3: Cross multiply
    42,919.72x = 64,393.58 × 20,735.64
  4. Step 4: Simplify right side
    42,919.72x = 1,335,242,145.03
  5. Step 5: Solve for x
    x = 1,335,242,145.03/42,919.72
  6. Step 6: Final answer
    x = 31,110.23

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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.