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Finding the Fourth Proportional to 63,029.78, 86,981.12 and 34,349.45

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Solution

The fourth proportional to 63,029.78, 86,981.12 and 34,349.45 is: 47,402.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,029.78 : 86,981.12 = 34,349.45 : x
  2. Step 2: Convert to fraction form
    63,029.78/86,981.12 = 34,349.45/x
  3. Step 3: Cross multiply
    63,029.78x = 86,981.12 × 34,349.45
  4. Step 4: Simplify right side
    63,029.78x = 2,987,753,678.09
  5. Step 5: Solve for x
    x = 2,987,753,678.09/63,029.78
  6. Step 6: Final answer
    x = 47,402.25

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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.