Home / 72,736.75-100,376.06-40,905.88

Finding the Fourth Proportional to 72,736.75, 100,376.06 and 40,905.88

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Solution

The fourth proportional to 72,736.75, 100,376.06 and 40,905.88 is: 56,449.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,736.75 : 100,376.06 = 40,905.88 : x
  2. Step 2: Convert to fraction form
    72,736.75/100,376.06 = 40,905.88/x
  3. Step 3: Cross multiply
    72,736.75x = 100,376.06 × 40,905.88
  4. Step 4: Simplify right side
    72,736.75x = 4,105,970,839.86
  5. Step 5: Solve for x
    x = 4,105,970,839.86/72,736.75
  6. Step 6: Final answer
    x = 56,449.74

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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.