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Finding the Fourth Proportional to 35,504.42, 48,994.40 and 20,386.42

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Solution

The fourth proportional to 35,504.42, 48,994.40 and 20,386.42 is: 28,132.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,504.42 : 48,994.40 = 20,386.42 : x
  2. Step 2: Convert to fraction form
    35,504.42/48,994.40 = 20,386.42/x
  3. Step 3: Cross multiply
    35,504.42x = 48,994.40 × 20,386.42
  4. Step 4: Simplify right side
    35,504.42x = 998,820,416.05
  5. Step 5: Solve for x
    x = 998,820,416.05/35,504.42
  6. Step 6: Final answer
    x = 28,132.28

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.