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Finding the Fourth Proportional to 75,391.66, 104,041.69 and 40,936.38

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Solution

The fourth proportional to 75,391.66, 104,041.69 and 40,936.38 is: 56,492.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,391.66 : 104,041.69 = 40,936.38 : x
  2. Step 2: Convert to fraction form
    75,391.66/104,041.69 = 40,936.38/x
  3. Step 3: Cross multiply
    75,391.66x = 104,041.69 × 40,936.38
  4. Step 4: Simplify right side
    75,391.66x = 4,259,089,602.97
  5. Step 5: Solve for x
    x = 4,259,089,602.97/75,391.66
  6. Step 6: Final answer
    x = 56,492.85

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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.