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Finding the Fourth Proportional to 63,134.93, 94,630.86 and 21,005.11

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Solution

The fourth proportional to 63,134.93, 94,630.86 and 21,005.11 is: 31,483.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,134.93 : 94,630.86 = 21,005.11 : x
  2. Step 2: Convert to fraction form
    63,134.93/94,630.86 = 21,005.11/x
  3. Step 3: Cross multiply
    63,134.93x = 94,630.86 × 21,005.11
  4. Step 4: Simplify right side
    63,134.93x = 1,987,731,623.69
  5. Step 5: Solve for x
    x = 1,987,731,623.69/63,134.93
  6. Step 6: Final answer
    x = 31,483.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.