Home / 79,961.76-120,016.08-40,547.16

Finding the Fourth Proportional to 79,961.76, 120,016.08 and 40,547.16

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Solution

The fourth proportional to 79,961.76, 120,016.08 and 40,547.16 is: 60,857.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,961.76 : 120,016.08 = 40,547.16 : x
  2. Step 2: Convert to fraction form
    79,961.76/120,016.08 = 40,547.16/x
  3. Step 3: Cross multiply
    79,961.76x = 120,016.08 × 40,547.16
  4. Step 4: Simplify right side
    79,961.76x = 4,866,311,198.33
  5. Step 5: Solve for x
    x = 4,866,311,198.33/79,961.76
  6. Step 6: Final answer
    x = 60,857.98

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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.