Home / 40,979.85-61,448.63-18,774.20

Finding the Fourth Proportional to 40,979.85, 61,448.63 and 18,774.20

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Solution

The fourth proportional to 40,979.85, 61,448.63 and 18,774.20 is: 28,151.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,979.85 : 61,448.63 = 18,774.20 : x
  2. Step 2: Convert to fraction form
    40,979.85/61,448.63 = 18,774.20/x
  3. Step 3: Cross multiply
    40,979.85x = 61,448.63 × 18,774.20
  4. Step 4: Simplify right side
    40,979.85x = 1,153,648,891.27
  5. Step 5: Solve for x
    x = 1,153,648,891.27/40,979.85
  6. Step 6: Final answer
    x = 28,151.61

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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.