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Finding the Fourth Proportional to 35,346.43, 48,778.23 and 19,431.90

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Solution

The fourth proportional to 35,346.43, 48,778.23 and 19,431.90 is: 26,816.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,346.43 : 48,778.23 = 19,431.90 : x
  2. Step 2: Convert to fraction form
    35,346.43/48,778.23 = 19,431.90/x
  3. Step 3: Cross multiply
    35,346.43x = 48,778.23 × 19,431.90
  4. Step 4: Simplify right side
    35,346.43x = 947,853,596.45
  5. Step 5: Solve for x
    x = 947,853,596.45/35,346.43
  6. Step 6: Final answer
    x = 26,816.11

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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.