Home / 74,727.75-103,122.23-40,736.90

Finding the Fourth Proportional to 74,727.75, 103,122.23 and 40,736.90

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Solution

The fourth proportional to 74,727.75, 103,122.23 and 40,736.90 is: 56,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,727.75 : 103,122.23 = 40,736.90 : x
  2. Step 2: Convert to fraction form
    74,727.75/103,122.23 = 40,736.90/x
  3. Step 3: Cross multiply
    74,727.75x = 103,122.23 × 40,736.90
  4. Step 4: Simplify right side
    74,727.75x = 4,200,879,971.29
  5. Step 5: Solve for x
    x = 4,200,879,971.29/74,727.75
  6. Step 6: Final answer
    x = 56,215.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.