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Finding the Fourth Proportional to 72,796.68, 100,457.61 and 40,531.44

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Solution

The fourth proportional to 72,796.68, 100,457.61 and 40,531.44 is: 55,932.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,796.68 : 100,457.61 = 40,531.44 : x
  2. Step 2: Convert to fraction form
    72,796.68/100,457.61 = 40,531.44/x
  3. Step 3: Cross multiply
    72,796.68x = 100,457.61 × 40,531.44
  4. Step 4: Simplify right side
    72,796.68x = 4,071,691,592.26
  5. Step 5: Solve for x
    x = 4,071,691,592.26/72,796.68
  6. Step 6: Final answer
    x = 55,932.38

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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.