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Finding the Fourth Proportional to 30,655.62, 42,324.12 and 20,063.16

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Solution

The fourth proportional to 30,655.62, 42,324.12 and 20,063.16 is: 27,699.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,655.62 : 42,324.12 = 20,063.16 : x
  2. Step 2: Convert to fraction form
    30,655.62/42,324.12 = 20,063.16/x
  3. Step 3: Cross multiply
    30,655.62x = 42,324.12 × 20,063.16
  4. Step 4: Simplify right side
    30,655.62x = 849,155,591.42
  5. Step 5: Solve for x
    x = 849,155,591.42/30,655.62
  6. Step 6: Final answer
    x = 27,699.83

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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.