Home / 40,480.75-60,730.85-12,778.75

Finding the Fourth Proportional to 40,480.75, 60,730.85 and 12,778.75

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Solution

The fourth proportional to 40,480.75, 60,730.85 and 12,778.75 is: 19,171.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,480.75 : 60,730.85 = 12,778.75 : x
  2. Step 2: Convert to fraction form
    40,480.75/60,730.85 = 12,778.75/x
  3. Step 3: Cross multiply
    40,480.75x = 60,730.85 × 12,778.75
  4. Step 4: Simplify right side
    40,480.75x = 776,064,349.44
  5. Step 5: Solve for x
    x = 776,064,349.44/40,480.75
  6. Step 6: Final answer
    x = 19,171.19

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1.5x scale

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.