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Finding the Fourth Proportional to 63,699.21, 87,890.63 and 38,548.17

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Solution

The fourth proportional to 63,699.21, 87,890.63 and 38,548.17 is: 53,187.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,699.21 : 87,890.63 = 38,548.17 : x
  2. Step 2: Convert to fraction form
    63,699.21/87,890.63 = 38,548.17/x
  3. Step 3: Cross multiply
    63,699.21x = 87,890.63 × 38,548.17
  4. Step 4: Simplify right side
    63,699.21x = 3,388,022,753.91
  5. Step 5: Solve for x
    x = 3,388,022,753.91/63,699.21
  6. Step 6: Final answer
    x = 53,187.83

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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.