Home / 42,067.28-63,087.26-13,979.79

Finding the Fourth Proportional to 42,067.28, 63,087.26 and 13,979.79

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Solution

The fourth proportional to 42,067.28, 63,087.26 and 13,979.79 is: 20,965.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,067.28 : 63,087.26 = 13,979.79 : x
  2. Step 2: Convert to fraction form
    42,067.28/63,087.26 = 13,979.79/x
  3. Step 3: Cross multiply
    42,067.28x = 63,087.26 × 13,979.79
  4. Step 4: Simplify right side
    42,067.28x = 881,946,681.42
  5. Step 5: Solve for x
    x = 881,946,681.42/42,067.28
  6. Step 6: Final answer
    x = 20,965.15

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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.