Home / 60,979.58-91,446.64-20,987.38

Finding the Fourth Proportional to 60,979.58, 91,446.64 and 20,987.38

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Solution

The fourth proportional to 60,979.58, 91,446.64 and 20,987.38 is: 31,473.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,979.58 : 91,446.64 = 20,987.38 : x
  2. Step 2: Convert to fraction form
    60,979.58/91,446.64 = 20,987.38/x
  3. Step 3: Cross multiply
    60,979.58x = 91,446.64 × 20,987.38
  4. Step 4: Simplify right side
    60,979.58x = 1,919,224,821.23
  5. Step 5: Solve for x
    x = 1,919,224,821.23/60,979.58
  6. Step 6: Final answer
    x = 31,473.24

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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.