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Finding the Fourth Proportional to 72,634.44, 100,242.78 and 48,810.72

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Solution

The fourth proportional to 72,634.44, 100,242.78 and 48,810.72 is: 67,363.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,634.44 : 100,242.78 = 48,810.72 : x
  2. Step 2: Convert to fraction form
    72,634.44/100,242.78 = 48,810.72/x
  3. Step 3: Cross multiply
    72,634.44x = 100,242.78 × 48,810.72
  4. Step 4: Simplify right side
    72,634.44x = 4,892,922,266.60
  5. Step 5: Solve for x
    x = 4,892,922,266.60/72,634.44
  6. Step 6: Final answer
    x = 67,363.67

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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.