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Finding the Fourth Proportional to 72,599.44, 100,179.76 and 40,768.08

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Solution

The fourth proportional to 72,599.44, 100,179.76 and 40,768.08 is: 56,255.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,599.44 : 100,179.76 = 40,768.08 : x
  2. Step 2: Convert to fraction form
    72,599.44/100,179.76 = 40,768.08/x
  3. Step 3: Cross multiply
    72,599.44x = 100,179.76 × 40,768.08
  4. Step 4: Simplify right side
    72,599.44x = 4,084,136,470.06
  5. Step 5: Solve for x
    x = 4,084,136,470.06/72,599.44
  6. Step 6: Final answer
    x = 56,255.76

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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.