Home / 72,778.41-109,133.01-25,387.74

Finding the Fourth Proportional to 72,778.41, 109,133.01 and 25,387.74

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Solution

The fourth proportional to 72,778.41, 109,133.01 and 25,387.74 is: 38,069.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,778.41 : 109,133.01 = 25,387.74 : x
  2. Step 2: Convert to fraction form
    72,778.41/109,133.01 = 25,387.74/x
  3. Step 3: Cross multiply
    72,778.41x = 109,133.01 × 25,387.74
  4. Step 4: Simplify right side
    72,778.41x = 2,770,640,483.30
  5. Step 5: Solve for x
    x = 2,770,640,483.30/72,778.41
  6. Step 6: Final answer
    x = 38,069.54

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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.